Forward Citations = 157

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4 inventors (with patents filed for the assignee):

Philip K Sykes (3 out of 11 patents)

Breck J Johnson (3 out of 4 patents)

Stephen R Schmitz (2 out of 2 patents)

4. George D Canfield (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 5145068 - Cassette album with channel-form hinges and method (1992-09-08),

2. 4966283 - Cassette album with channel-form hinges and method (1990-10-30),

3. 4771886 - Apparatus and method for manufacturing two-ply cassette albums (1988-09-20),

4. 4641750 - Two-ply cassette album and method of making same (1987-02-10),

5. 4496048 - Video cassette carrier (1985-01-29),

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This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

5 Patents

#96 in Eden Prairie, MN

#1,388 in Minnesota

#50,255 in US

Eden Prairie, MN, United States of America

Blackbourn Inc.

Forward Citations = 157

4 inventors:

Philip K Sykes (3 out of 11 patents)

Breck J Johnson (3 out of 4 patents)

Stephen R Schmitz (2 out of 2 patents)

4. George D Canfield (1 out of 1 patent)

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