US3405748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsion tube screw driver
Assignee: Individual
•
Filing: 1966-06-29
•
Granted: 1968-10-15
•
Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 Sorteberg Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/007; B25B15/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A SCREW DRIVER COMPRISING A TUBULAR SHANK HAVING A DIAMETRICAL PARTITION JOINED TO THE SHANK AND EXTENDING THE FULL LENGTH THEREOF, SAID PARTITION BEING RECTANGULAR IN CROSS-SECTION, ONE END OF SAID TUBULAR SHANK HAVING ARCUATE RECESSES FORMED ON OPPOSITE SIDES OF SAID PARTITION, SAID RECESSES EXTENDING THE FULL WIDTH OF SAID PARTITION WHEREBY THE FORWARD END OF SAID PARTITION IS EXPOSED SO AS TO DEFINE A BIT.
Claim 2
Dependent Claim
67 words
A SCREW DRIVER COMPRISING A TUBULAR SHANK HAVING A DIAMETRICAL PARTITION JOINED TO THE SHANK AND EXTENDING THE FULL LENGTH THEREOF, SAID PARTITION BEING RECTANGULAR IN CROSS-SECTION, ONE END OF SAID TUBULAR SHANK HAVING ARCUATE RECESSES FORMED ON OPPOSITE SIDES OF SAID PARTITION, SAID RECESSES EXTENDING THE FULL WIDTH OF SAID PARTITION WHEREBY THE FORWARD END OF SAID PARTITION IS EXPOSED SO AS TO DEFINE A BIT.
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |