US2634007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch tripping device
Assignee: Sanford Investment Co
•
Filing: 1947-04-07
•
Granted: 1953-04-07
•
Expires: 1967-04-07
Abstract
No abstract record available.
Inventors
- 👤 Hugh W Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:20
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/30; E; E21; E21D; E21D11/00; E21D11/14; E21D11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1195975A
Cited
US703257A
Cited
GB191301966A
Cited
US2225462A
Cited
US2362986A
Cited
US2399708A
Cited
US2487447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |