US3245630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge for endless tape
Assignee: Viking of Minneapolis Inc
•
Filing: 1961-09-13
•
Granted: 1966-04-12
•
Expires: 1981-09-13
Abstract
No abstract record available.
Inventors
- 👤 Richard L Morris
- 👤 Harlee A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:47
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
AN ENDLESS MAGNETIC TAPE CARTRIDGE COMPRISING A BOX, A REEL ROTATABLY MOUNTED IN THE BOX, AN ENDLESS TAPE WOUND ON THE REEL, AND MEANS ENGAGING INNER CONVOLUTIONS OF THE TAPE FOR RECIPROCATING SAME AXIALLY RELATIVE TO EACH OTHER ON THE REEL TO PREVENT BINDING OR STICKING THEREBETWEEN.
References Cited (Backward Citations)
US1491575A
Cited
GB172600A
Cited
US2837332A
Cited
US2922642A
Cited
US2951654A
Cited
US3030041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |