US2497750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock
Assignee: Sargent Manufacturing Co
•
Filing: 1946-05-09
•
Granted: 1950-02-14
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jr George W Wardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:36
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/12; Y; Y10; Y10S; Y10S292/00; Y10S292/37; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/098; Y10T292/0982; Y10T292/0985; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/542; Y10T70/5434; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5792; Y10T70/5796; Y10T70/5801
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1133962A
Cited
US1877798A
Cited
US1882625A
Cited
US1880675A
Cited
US2038907A
Cited
US2369873A
Cited
US2403597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |