US3423974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary door lock
Assignee: CRISTINA U BERNSLEY
•
Filing: 1966-07-13
•
Granted: 1969-01-28
•
Expires: 1986-07-13
Abstract
No abstract record available.
Inventors
- 👤 Cristina U Bernsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:22
CPC Classifications
E; E05; E05B; E05B13/00; E05B13/002; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/80; Y10T70/8432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR463579A
Cited
US1700135A
Cited
US1961456A
Cited
US2096568A
Cited
FR917095A
Cited
FR928473A
Cited
US3263462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |