Patent US2257008A successfully refreshed from Google Patents.
US2257008A
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US
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Locking device
Assignee: JOHN P FRISSE
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Filing: 1938-10-12
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Granted: 1941-09-23
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Expires: 1958-10-12
Abstract
No abstract record available.
Inventors
- 👤 William A Henn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
F; F16; F16B; F16B17/00; F16B17/004; E; E04; E04B; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B2/00; E04B2/56; E04B2/70; E04B2001/262; E04B2001/2652; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4916
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) | 1944-09-22 | 1945-03-24 | 1945-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-22 | 1949-03-24 | 1949-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-22 | 1953-03-24 | 1953-09-23 | $7700.00 | Window Closed / Lapsed |