Patent US3384839A successfully refreshed from Google Patents.
US2943631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1960-07-05
•
Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:39
CPC Classifications
G; G07; G07F; G07F5/00; G07F5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1096172A
Cited
US1850148A
Cited
US1902328A
Cited
US1947456A
Cited
US2110014A
Cited
US2163351A
Cited
US2170288A
Cited
US2423502A
Cited
GB603663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |