US3126973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary drilling bit
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:07
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A DRILL BIT FOR THE ROTARY DRILLING OF WELLS COMPRISING A BODY; A MULTIPLICITY OF CONICAL CUTTERS ROTATABLE SUPPORTED BY SAID BODY, A PLURALITY OF ROWS OF TEETH INTEGRAL WITH EACH SAID CUTTER, AT LEAST ONE OF SAID ROWS HAVING TEETH OF UNEQUAL LENGTH WITH TEETH OF EQUAL LENGTH DISPOSED ABOUT 180* APART TO IMPART PERCUSSION MOTION TO SAID BIT DURING SAID DRILLING.
Claim 2
Dependent Claim
63 words
A DRILL BIT FOR THE ROTARY DRILLING OF WELLS COMPRISING A BODY; A MULTIPLICITY OF CONICAL CUTTERS ROTATABLE SUPPORTED BY SAID BODY, A PLURALITY OF ROWS OF TEETH INTEGRAL WITH EACH SAID CUTTER, AT LEAST ONE OF SAID ROWS HAVING TEETH OF UNEQUAL LENGTH WITH TEETH OF EQUAL LENGTH DISPOSED ABOUT 180* APART TO IMPART PERCUSSION MOTION TO SAID BIT DURING SAID DRILLING.
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |