Donald V. Mann

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San Francisco, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Means to prevent buildup of contaminants on the capstan of a magnet...
- Patent number 6,525,906
- Issue date Feb 25, 2003
- Donald Mann
- G11 - INFORMATION STORAGE
Information Patent Grant
Unidirectional short tape endless loop cassette
- Patent number 5,257,747
- Issue date Nov 2, 1993
- Donald V. Mann
- G11 - INFORMATION STORAGE
Information Patent Grant
Auxiliary drive endless loop tape cartridge
- Patent number 3,938,752
- Issue date Feb 17, 1976
- Donald V. Mann
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL