US2650386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swinging door control
Assignee: Individual
•
Filing: 1949-01-12
•
Granted: 1953-09-01
•
Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Edwards Martha Furbish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F3/00; E05F3/22; E05F3/221; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528195A
Cited
US1671614A
Cited
US1705820A
Cited
US2063526A
Cited
US2167409A
Cited
US2411481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |