US3520343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-tapping locking screw
Assignee: SHELBY UNIVERSAL Corp
•
Filing: 1967-09-18
•
Granted: 1970-07-14
•
Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/30; B; B21; B21H; B21H3/00; B21H3/02; B21H3/025; F16B25/00; F16B25/0036; F16B25/0042; F16B25/0047; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1827615A
Cited
US2113600A
Cited
US2437638A
Cited
US2873641A
Cited
USRE24572E
Cited
US3247877A
Cited
US3249142A
Cited
US3246556A
Cited
US3342234A
Cited
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 |