US3341143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge
Assignee: Memorex Telex Corp
•
Filing: 1964-08-05
•
Granted: 1967-09-12
•
Expires: 1984-08-05
Abstract
No abstract record available.
Inventors
- 👤 Paul J Nieland
- 👤 Jr William R Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2499895A
Cited
US2876005A
Cited
US3065310A
Cited
US3027112A
Cited
US3161362A
Cited
US3075427A
Cited
US3269671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |