US2444819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: Sargent Manufacturing Co
•
Filing: 1945-01-27
•
Granted: 1948-07-06
•
Expires: 1965-01-27
Abstract
No abstract record available.
Inventors
- 👤 John B Freysinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/12; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/098; Y10T292/0982; Y10T292/0983; Y10T292/0984; Y10T292/0985; Y10T292/0989; Y10T292/099; Y10T292/62
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1123004A
Cited
US1707215A
Cited
US1991031A
Cited
US2179958A
Cited
US2238314A
Cited
US2357552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |