Patent US2490200A successfully refreshed from Google Patents.
US2490200A
Expired / Lapsed
US
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Differential actuating mechanism
Assignee: —
•
Filing: —
•
Granted: 1949-12-06
•
Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:55
CPC Classifications
G; G06; G06C; G06C7/00; G06C7/02; G06C7/08; G06C23/00; G06C23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909715A
Cited
US1977094A
Cited
US2108476A
Cited
US2241987A
Cited
US2355637A
Cited
US1285234A
Cited
CH173916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |