Patent US3527272A successfully refreshed from Google Patents.
US3527272A
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US
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Modified felling head
Assignee: International Paper Canada Inc
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Filing: 1968-03-11
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Granted: 1970-09-08
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Douglas D Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:36
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/087; A01G23/089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3270787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |