Patent US4937159A successfully refreshed from Google Patents.
Patent US1555174A successfully refreshed from Google Patents.
US1555174A
Expired / Lapsed
US
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Motor-operated door latch
Assignee: Individual
•
Filing: 1924-08-20
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Granted: 1925-09-29
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Expires: 1944-08-20
Abstract
No abstract record available.
Inventors
- 👤 Williams Willie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:33
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/47; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531; Y; Y10; Y10S; Y10S292/00; Y10S292/23; Y10S292/25; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/1014; Y10T292/1021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-09-28 | 1929-03-30 | 1929-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-28 | 1933-03-30 | 1933-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-28 | 1937-03-30 | 1937-09-29 | $7700.00 | Window Closed / Lapsed |