Patent US3143813A successfully refreshed from Google Patents.
US3143813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for felling trees
Assignee: Individual
•
Filing: 1961-10-16
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Granted: 1964-08-11
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Dewey C Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:28
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
FOR USE WITH A CONSTRUCTION VEHICLE HAVING A VERTICALLY MOVABLE MEMBER, A ROOT CUTTING ATTACHMENT COMPRISING AN ELONGATED VERTICALLY PROJECTING BEAM, BLADE MEANS SECURED TO ONE END OF SAID BEAM AND PROJECTING FORWARDLY OUTWARDLY THEREFROM, SUPPORTING MEANS SECURED TO THE BLADE AND THE LOWER END OF THE BEAM, SAID SUPPORTING MEANS HAVING THE SHAPE OF A FRUSTUM OF A CONE WITH THE SMALLER PORTION THEREOF BEING DOWNWARDLY PRESENTED, AND MEANS FOR REMOVABLY SECURING SAID BEAM TO SAID MEMBER.
Claim 2
Dependent Claim
78 words
FOR USE WITH A CONSTRUCTION VEHICLE HAVING A VERTICALLY MOVABLE MEMBER, A ROOT CUTTING ATTACHMENT COMPRISING AN ELONGATED VERTICALLY PROJECTING BEAM, BLADE MEANS SECURED TO ONE END OF SAID BEAM AND PROJECTING FORWARDLY OUTWARDLY THEREFROM, SUPPORTING MEANS SECURED TO THE BLADE AND THE LOWER END OF THE BEAM, SAID SUPPORTING MEANS HAVING THE SHAPE OF A FRUSTUM OF A CONE WITH THE SMALLER PORTION THEREOF BEING DOWNWARDLY PRESENTED, AND MEANS FOR REMOVABLY SECURING SAID BEAM TO SAID MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |