1
Hoyt M Layson Jr: Portable tracking apparatus for continuous position determination of criminal offenders and victims. Pro Tech Monitoring, Herbert W Larson, Larson & Larson P A, March 24, 1998: US05731757 (378 worldwide citation)

A portable locator or tracking apparatus is provided for continuous location determination of subjects which communicates with a body-worn, non-removable, tamper resistant transceiver and a central data-base system. The portable tracking apparatus has a Global Position System (GPS) receiver and iner ...


2
Layson Jr Hoyt M: Portable tracking apparatus for continuous position determination of criminal offenders and victims. Pro Tech Monitoring, April 28, 1999: GB2330676-A (1 worldwide citation)

A portable locator or tracking apparatus (12) is provided for continuous location determination of subjects (16, 18) which communicates with a body-worn, non-removable tamper resistant transceiver (20) and a central data-base system (22). The portable tracking apparatus (12) has Global Position Syst ...


3
Layson Hoyt M Jr: Appareil de poursuite portable pour determiner la position en continu dauteurs et de victimes dinfractions, Portable tracking apparatus for continuous position determination of criminal offenders and victims. Pro Tech Monitoring, Pro Tech Monitoring, BERESKIN & PARR, February 26, 1998: CA2261652

A portable locator or tracking apparatus (12) is provided for continuous location determination of subjects (16, 18) which communicates with a body-worn, non-removable tamper resistant transceiver (20) and a central data-base system (22). The portable tracking apparatus (12) has a Global Position Sy ...


4
Layson Hoyt M Jr: Portable tracking apparatus for continuous position determination of criminal offenders and victims. Pro Tech Monitoring, Layson Hoyt M Jr, LARSON Herbert W, February 26, 1998: WO/1998/008204

A portable locator or tracking apparatus (12) is provided for continuous location determination of subjects (16, 18) which communicates with a body-worn, non-removable tamper resistant transceiver (20) and a central data-base system (22). The portable tracking apparatus (12) has a Global Position Sy ...