US3120766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun type drilling means
Assignee: Zagar Inc
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Filing: 1961-04-14
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Granted: 1964-02-11
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Frank G Zagar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0486; B23B49/00; B23B49/02; B23B51/06; B23B51/063; B23B51/066; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/89; Y10T408/899
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
A GUN DRILL COMPRISING A SOLID CYLINDRICAL SHANK TERMINATING IN A CUTTING TIP, AT LEAST ONE RELATIVELY DEEP FLUTE EXTENDING FROM SAID CUTTING TIP ALONG SAID SHANK TO A FIRST TERMINATION POINT, AT LEAST ONE UNOBSTRUCTED LONGITUDINAL DEPRESSION OF CONSTANT LENGTH IN THE SURFACE OF SAID CYLINDRICAL SHANK AND EXTENDING FROM SAID CUTTING TIP ALONG SAID SHANK AND TERMINATING AT A POINT INTERMEDIATE SAID CUTTING TIP AND SAID FIRST TERMINATION POINT, THE SURFACE OF SAID CYLINDRICAL SHANK REMAINING CYLINDRICAL THROUGHOU THE LENGTH OF SAID LAST NAMED DEPRESSION.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |