US3302672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw driving tool
Assignee: Individual
•
Filing: 1965-07-12
•
Granted: 1967-02-07
•
Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Walton Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; F; F16; F16B; F16B23/00; F16B23/0076; Y; Y10; Y10S; Y10S411/00; Y10S411/91; Y10S411/911; Y10S411/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SCREW DRIVING TOOL COMPRISING A CYLINDRICAL HEAD HAVING AN END SURFACE, SAID END SURFACE CONTAINING A CONCAVITY DEFINED BY ADJACENT SEGMENTS OF TWO COMPLEMENTARY HEMISPHERES, SAID SEGMENTS BEING DISPLACED TO OPPOSITE SIDES OF THE CENTER AXIS OF SAID HEAD UPON SAID END SURFACE TO FORM WITH SAID END SURFACE A PAIR OF OP-
Claim 2
Dependent Claim
54 words
A SCREW DRIVING TOOL COMPRISING A CYLINDRICAL HEAD HAVING AN END SURFACE, SAID END SURFACE CONTAINING A CONCAVITY DEFINED BY ADJACENT SEGMENTS OF TWO COMPLEMENTARY HEMISPHERES, SAID SEGMENTS BEING DISPLACED TO OPPOSITE SIDES OF THE CENTER AXIS OF SAID HEAD UPON SAID END SURFACE TO FORM WITH SAID END SURFACE A PAIR OF OP-
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |