US2661945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric door operator
Assignee: Consolidated Car Heating Co Inc
•
Filing: 1951-11-17
•
Granted: 1953-12-08
•
Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:02
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/605; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/302; E05Y2800/00; E05Y2800/73; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1783354A
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US1839232A
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US2075000A
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US2053172A
Cited
US2476111A
Cited
US2583662A
Cited
US2572785A
Cited
US2558032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |