US3126067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller bit with inserts
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/50; E21B10/52; E21B10/08; E21B10/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A ROLLER CUTTER COMPRISING A BODY, CIRCUMFERENTIAL ROWS OF TEETH ON THE SAID BODY, EACH OF THE SAID ROWS COMPRISING SPACED TEETH HAVING CIRCUMFERENTIALLY EXTENDING CRESTS, AND CYLINDRICAL HARD METAL INSERTS IN SAID BODY BETWEEN SAID SPACED TEETH, THE SAID SPACED TEETH EXTENDING RADIALLY BEYOND THE OUTER ENDS OF THE SAID HARD METAL INSERTS.
References Cited (Backward Citations)
US1143272A
Cited
US1656022A
Cited
US1840390A
Cited
US2255435A
Cited
US2634105A
Cited
US2774571A
Cited
US2804282A
Cited
US2833520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |