US2455840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree-felling saw attachment for tractors
Assignee: Individual
•
Filing: 1944-11-03
•
Granted: 1948-12-07
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Webb James Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:53
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/10; Y; Y10; Y10S; Y10S83/00; Y10S83/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318324A
Cited
FR632508A
Cited
US1210305A
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US1832599A
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US1798402A
Cited
US2299129A
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US2350880A
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US2365408A
Cited
US2404655A
Cited
US2400595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |