Patent US2908309A successfully refreshed from Google Patents.
US2908309A
Expired / Lapsed
US
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Threadless plastic nut having stepped bore sections
Assignee: Individual
•
Filing: 1956-10-30
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Granted: 1959-10-13
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Expires: 1976-10-30
Abstract
No abstract record available.
Inventors
- 👤 Adelaide E Brill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:45
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/006; F16B37/00; F16B37/005; F16B39/00; F16B39/22; F16B39/28; F16B39/284; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US228816A
Cited
GB190407467A
Cited
US1356404A
Cited
GB569550A
Cited
US2439415A
Cited
US2545514A
Cited
US2688499A
Cited
FR1062703A
Cited
US2788829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |