US3520342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking threaded fastener
Assignee: Individual
•
Filing: 1968-10-01
•
Granted: 1970-07-14
•
Expires: 1988-10-01
Abstract
No abstract record available.
Inventors
- 👤 Harry Scheffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/004; F16B39/00; F16B39/22; F16B39/24; F16B39/26; F16B39/28; F16B39/34; F16B39/36; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |