Patent US2177672A successfully refreshed from Google Patents.
US2177672A
Expired / Lapsed
US
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Door latch
Assignee: Individual
•
Filing: 1934-10-03
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Granted: 1939-10-31
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Expires: 1954-10-03
Abstract
No abstract record available.
Inventors
- 👤 Fred C Schoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:28
CPC Classifications
E; E05; E05B; E05B5/00; E05B5/003; Y; Y10; Y10S; Y10S292/00; Y10S292/31; Y10T; Y10T292/00; Y10T292/03; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5761
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) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |