Robert L. Hanson

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East Bethel, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Air filter system for helical scanner drum with vented drum cover
- Patent number 5,359,475
- Issue date Oct 25, 1994
- Minnesota Mining and Manufacturing Company
- Lester M. Aseere
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reel pressure button for tape reels
- Patent number 5,328,117
- Issue date Jul 12, 1994
- Minnesota Mining and Manufacturing Company
- Vincent P. Teuber
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording latch
- Patent number 5,189,582
- Issue date Feb 23, 1993
- Minnesota Mining and Manufacturing Company
- Robert L. Hanson
- G11 - INFORMATION STORAGE
Information Patent Grant
Encodable insert for a recording cassette
- Patent number 4,897,750
- Issue date Jan 30, 1990
- Minnesota Mining and Manufacturing Company
- Robert L. Hanson
- G11 - INFORMATION STORAGE
Information Patent Grant
Record/not record latch for recording cassette
- Patent number 4,875,109
- Issue date Oct 17, 1989
- Minnesota Mining and Manufacturing Company
- Robert L. Hanson
- G11 - INFORMATION STORAGE