Blackbourn, Inc.

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Eden Prairie, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Cassette album with channel-form hinges and method
- Patent number 5,145,068
- Issue date Sep 8, 1992
- Blackbourn Inc
- Stephen R. Schmitz
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Cassette album with channel-form hinges and method
- Patent number 4,966,283
- Issue date Oct 30, 1990
- Blackbourn Inc
- Philip K. Sykes
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Apparatus and method for manufacturing two-ply cassette albums
- Patent number 4,771,886
- Issue date Sep 20, 1988
- Blackbourn, Inc.
- Breck J. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Two-ply cassette album and method of making same
- Patent number 4,641,750
- Issue date Feb 10, 1987
- Blackbourn, Inc.
- Breck J. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Video cassette carrier
- Patent number 4,496,048
- Issue date Jan 29, 1985
- Blackbourn, Inc.
- Philip K. Sykes
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73432038 - RINGPAK
- Serial number 73432038
- Registration number 1282458
- Filing date Jun 27, 1983
- Blackbourn, Inc.
- 16 - Paper, cardboard and goods made from these materials, not included in other classes