US2732966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operating mechanism
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:41
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/1041; E05F1/1066; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/516; Y; Y10; Y10T; Y10T292/00; Y10T292/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US674678A
Cited
US933070A
Cited
US969150A
Cited
US1247687A
Cited
US1549705A
Cited
US1975701A
Cited
US2151335A
Cited
US2168661A
Cited
US2538434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |