Patent US2517476A successfully refreshed from Google Patents.
US2517476A
Expired / Lapsed
US
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Cap screw
Assignee: Individual
•
Filing: 1945-07-09
•
Granted: 1950-08-01
•
Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Frank E Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:19
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/96
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US839235A
Cited
GB191005209A
Cited
US1049590A
Cited
US1406423A
Cited
GB276786A
Cited
US1896388A
Cited
US1956745A
Cited
US2217951A
Cited
US2229892A
Cited
US2226491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |