US3240248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut
Assignee: Russell Burdsall and Ward Corp
•
Filing: 1963-01-21
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Granted: 1966-03-15
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 William G Waltermire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:09
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64; B21K1/70; B21K1/707; F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191016223A
Cited
US1516716A
Cited
US1639681A
Cited
US1966613A
Cited
GB550823A
Cited
US2592129A
Cited
US2846701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |