US1862486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapping fastener
Assignee: SHAKEPROOF LOCK WASHER Co
•
Filing: 1931-07-20
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Granted: 1932-06-07
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Expires: 1951-07-20
Abstract
No abstract record available.
Inventors
- 👤 George C Trotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:28
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/0036; F16B25/0042; F16B25/0047; F16B25/001; F16B25/0021; F16B25/0078; Y; Y10; Y10S; Y10S408/00; Y10S408/714; Y10S411/00; Y10S411/03
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) | 1935-06-07 | 1935-12-07 | 1936-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-07 | 1939-12-07 | 1940-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-07 | 1943-12-07 | 1944-06-07 | $7700.00 | Window Closed / Lapsed |