US2573679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for door latches
Assignee: RUDOLPH I SCHONITZER
•
Filing: 1948-02-16
•
Granted: 1951-11-06
•
Expires: 1968-02-16
Abstract
No abstract record available.
Inventors
- 👤 Edwin L Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:39
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; E05B85/243; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0929; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0972; Y10T292/57; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2115849A
Cited
US1138875A
Cited
US2034746A
Cited
US2252591A
Cited
US2259670A
Cited
US2228674A
Cited
US2382062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |