61
Stevens Edward J: Louvered film for unidirectional light from a point source. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, November 11, 1975: US3919559 (42 worldwide citation)

A process for producing film including radiation-opaque louver-like elements of divergent, or convergent, orientation. Pairs of such films for example, using radio-opaque louvers, are valuable as Bucky grids for X-rays.


62
Gatzke Kenneth G, Raymond Jane E: Pavement-marking tape. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, October 28, 1975: US3915771 (42 worldwide citation)

A decomposable, paper-backed, retroreflective, pavement-marking tape for use in providing removable pavement markings.


63
Ahlberg Carl S, Drongeson John W: Lenses. Minnesota Mining and Manufacturing Company, Kinney Alexander Sell Steldt & Delahunt, February 12, 1974: US3791722 (40 worldwide citation)

Lenses are provided having a central sight zone embracing the field of view and at least an upper shading or shielding zone of lower transmittance arcing around the clear central zone so as to provide shading from above and the sides. A further amount of shading may be provided below the clear porti ...


64
Larry S McTaggart: Thermoformed polyester articles having impact resistance and high temperature dimensional stability. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, June 1, 1976: US03960807 (40 worldwide citation)

Shaped, thinwalled, thermoformed, heat-set polyester articles having a composition comprising polyester, 2-16% polymeric crack stopping agent, and at least 0.01% nucleating agent, exhibit relatively high temperature dimensional stability and impact resistance.


65
Wegwerth Arthur A, Lowrey R Dean: Safety glass light control medium. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, November 25, 1975: US3922440 (40 worldwide citation)

A humidity-resistant shatter-resistant light control medium comprises a light collimating film with cellulose acetate or cellulose acetate-butyrate surfaces having bonded to those surfaces a polymeric adhesive obtained from the polymerization of monomers comprising1. 50-80% by weight total monomer a ...


66
Valdis Mikelsons: Coated aluminum substrates. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, August 17, 1976: US03975197 (40 worldwide citation)

Aluminum substrates are provided having a coating of particulate material bound thereto by means of an in situ formed binder of aluminum hydroxyoxide. The coated aluminum constructions have utility in imaging and reproduction processes (e.g., as printing plates, as electrographic elements, etc.), as ...


67
Mukherjee Joan M W: Development-free printing plate. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, February 19, 1974: US3793033 (39 worldwide citation)

A presensitized, light-sensitive article capable of providing a lithographic printing plate requiring only image-wise exposure to actinic light and no subsequent image development is provided. The article is comprised of a support coated with a hydrophilic composition comprised of: 1) an organic sol ...


68
Phillipson Phillip William: Fishing rod handle joint. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, April 8, 1975: US3876320 (39 worldwide citation)

A fishing rod in which the butt of a rod fits into an axial cavity in the end of the handle and is locked into the handle by threading of a collet onto the handle over the rod and handle joint. The butt of the rod is formed with a support cylinder extending axially from the rod handle joint and the ...


69
Bazille Jr James H: Solderless wire connector. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, April 16, 1974: US3804971 (39 worldwide citation)

A solderless wire connector including a first connector member having wire receiving channels, and a second connector member mounted on the first connector member for relative movement from an open position to a closed position to engage a contact element carried by the second connector member with ...


70
Sidney M Leahy: Coated abrasive product comprising fused zirconia grains and method for abrading iron. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, December 14, 1976: US03996702 (38 worldwide citation)

The cutting rate and useful life of conventional resin bonded coated abrasive products in extremely high pressure abrading operations is significantly increased by using abrasive mineral which consists essentially of fused zirconia. Substantial amounts of diluent may be included, e.g., by blending o ...