1
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. BellSouth Intellectual Property Corporation, Shaw Pittman, March 12, 2002: US06356841 (100 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


2
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. BellSouth Intellectual Property Corporation, Merchant & Gould, September 18, 2007: US07272493 (68 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


3
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Intellectual Property I, Parks Knowlton, Paul Knowlton Esq, Adam J Citrin Esq, August 18, 2009: US07577525 (18 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


4
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Intellectual Property I, Parks IP Law, May 25, 2010: US07725218 (13 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


5
Marvin R Hamrick, R T Mitchell Ingman: G. P. S. management system. AT&T Mobility II, Parks Knowlton, Paul E Knowlton, December 2, 2008: US07460954 (11 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


6
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Delaware Intellectual Property, Merchant & Gould, April 29, 2008: US07366608 (11 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


7
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Intellectutal Property I, Parks IP Law, Mickki D Murray Esq, August 30, 2011: US08010251 (10 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


8
R T Mitchell Ingman: Immediate next task dispatch system and method. AT&T Intellectual Property I, Withers & Keys, June 30, 2009: US07555440 (5 worldwide citation)

A task management system assigns a plurality of tasks to a plurality of workers. The assigned tasks are dispatched according to dispatch orders. The task management system may designate a task as an immediate next task. The immediate next task is prioritized first in a dispatch order, and is thus th ...


9
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Intellectual Property I, Parks IP Law, Mickki D Murray Esq, September 18, 2012: US08271162 (4 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...


10
Marvin R Hamrick, R T Mitchell Ingman: G.P.S. management system. AT&T Intellectual Property I, Hartman & Citrin, May 13, 2014: US08725344 (2 worldwide citation)

A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to ...