US2923921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shapin
Assignee: —
•
Filing: —
•
Granted: 1960-02-02
•
Expires: 1977-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; Y; Y10; Y10S; Y10S707/00; Y10S707/99931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2224646A
Cited
US2124906A
Cited
US2295000A
Cited
US2533326A
Cited
US2427383A
Cited
US2539043A
Cited
US2501821A
Cited
US2609050A
Cited
US2482242A
Cited
US2615127A
Cited
US2641696A
Cited
US2721990A
Cited
US2776418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |