Patent US2963687A successfully refreshed from Google Patents.
US2963687A
Expired / Lapsed
US
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Magnetic systems
Assignee: RCA Corp
•
Filing: 1957-05-01
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Granted: 1960-12-06
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 George R Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/76; G; G11; G11C; G11C19/00; G11C19/02; G11C19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2803812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |