US2622429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety door lock
Assignee: Individual
•
Filing: 1950-03-21
•
Granted: 1952-12-23
•
Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 Lipiner Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:37
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/289; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5164; Y10T70/5199; Y10T70/5226; Y10T70/5235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US388074A
Cited
GB191216252A
Cited
DE322971C
Cited
DE339447C
Cited
US2329017A
Cited
US2368411A
Cited
US2505320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |