US2576579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cone grip lock nut
Assignee: JOHN J MURPHY
•
Filing: 1951-03-16
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Granted: 1951-11-27
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Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Raymond F Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:47
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/08; F16B37/0807; F16B39/00; F16B39/22; F16B39/28; F16B39/36; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/935; Y10T; Y10T24/00; Y10T24/44; Y10T24/44573; Y10T24/44581; Y10T24/44607; Y10T279/00; Y10T279/15; Y10T279/17; Y10T279/17564; Y10T279/17615
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) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |