US2694309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock-out-proof doorknob lock and latch set
Assignee: HOLLYMADE HARDWARE Manufacturing Co
•
Filing: 1952-02-16
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Granted: 1954-11-16
•
Expires: 1972-02-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert C Cerf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/542; Y10T70/5429
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1395414A
Cited
US1876576A
Cited
US1991031A
Cited
US1755434A
Cited
US2282213A
Cited
US2413733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |