US2666944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closing mechanism
Assignee: Individual
•
Filing: 1950-12-20
•
Granted: 1954-01-26
•
Expires: 1970-12-20
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Stehlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:47
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/02; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10S; Y10S16/00; Y10S16/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528195A
Cited
US1848574A
Cited
US842350A
Cited
US1662395A
Cited
US1899716A
Cited
GB545720A
Cited
US2421595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |