US3339952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction bolt or fastener
Assignee: National Lock Co
•
Filing: 1965-04-08
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Granted: 1967-09-05
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Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 Melvin H Beckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:07
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/0036; F16B25/0084; F16B25/001; F16B25/0031; F16B25/0078; F16B25/10; F16B25/103; F16B5/00; F16B5/02; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938; Y10S411/999; Y10T; Y10T403/00; Y10T403/44; Y10T403/49; Y10T403/4966
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |