US2665159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door control mechanism
Assignee: RUDOLPH I SCHONITZER
•
Filing: 1949-12-06
•
Granted: 1954-01-05
•
Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin L Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; E05B85/243; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1937520A
Cited
DE632624C
Cited
US2094413A
Cited
US2228674A
Cited
US2480688A
Cited
US2557468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |