US2476111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for automatic stopping and reversal of electromechanically operated doors
Assignee: Individual
•
Filing: 1945-07-07
•
Granted: 1949-07-12
•
Expires: 1965-07-07
Abstract
No abstract record available.
Inventors
- 👤 Opalek Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:43
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05F15/40; E05F15/42; E05F17/00; E05F17/004; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2800/00; E05Y2800/73; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682254A
Cited
US1574197A
Cited
US1642317A
Cited
US1745990A
Cited
US2253170A
Cited
US2342597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |