US2882948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut having contractible core actuable in two locking positions
Assignee: H H HELBUSH
•
Filing: 1955-05-16
•
Granted: 1959-04-21
•
Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 Frank C Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:29
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/282; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US661655A
Cited
US896358A
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US2361979A
Cited
US2677407A
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US2571145A
Cited
US2627293A
Cited
US2605805A
Cited
US2562376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |