US2635149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erasing means for magnetic recorders
Assignee: WILCOX GAY CORP
•
Filing: 1949-12-03
•
Granted: 1953-04-14
•
Expires: 1969-12-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Cain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:00
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G11B5/027; G11B5/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE591368C
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DE612489C
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US2210770A
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US2429792A
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US2419195A
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US2543483A
Cited
US2498423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |