Patent US2901019A successfully refreshed from Google Patents.
US2901019A
Expired / Lapsed
US
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Self-tapping and self-locking externally threaded fastener having locking section of greater pitch
Assignee: Individual
•
Filing: 1955-12-28
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Granted: 1959-08-25
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Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 Howard B Schweppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/001; F16B25/0021; F16B25/0036; F16B25/0042; F16B25/0047; F16B25/0057; F16B25/0063; F16B25/0073; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2269476A
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US2356098A
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US2421181A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |