Patent US3353575A successfully refreshed from Google Patents.
US3353575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of delimbing and felling trees
Assignee: Individual
•
Filing: 1965-10-19
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Granted: 1967-11-21
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert W Larson
- 👤 Ole E Olson
- 👤 Wilfrid D Harkness
- 👤 William E Mair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:11
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF REMOVING BRANCHES FROM A VERTICAL TREE THAT COMPRISES DRIVING A KNIFE HEAD UPWARDLY FOR SUBSTANTIALLY THE HEIGHT OF THE TREE AND SOLELY IN AN AXIAL DIRECTION TO SHEAR THE BRANCHES FROM THE TREE AND IMPARTING KINETIC ENERGY TO THE KNIFE HEAD SUBSTANTIALLY CON-
Claim 2
Independent Claim
46 words
A METHOD OF REMOVING BRANCHES FROM A VERTICAL TREE THAT COMPRISES DRIVING A KNIFE HEAD UPWARDLY FOR SUBSTANTIALLY THE HEIGHT OF THE TREE AND SOLELY IN AN AXIAL DIRECTION TO SHEAR THE BRANCHES FROM THE TREE AND IMPARTING KINETIC ENERGY TO THE KNIFE HEAD SUBSTANTIALLY CON-
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |