US2542371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic log barker with selflubricating sealing means
Assignee: Fort James Corp
•
Filing: 1946-04-08
•
Granted: 1951-02-20
•
Expires: 1966-04-08
Abstract
No abstract record available.
Inventors
- 👤 Frank H Swift
- 👤 Guy R Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:34
CPC Classifications
B; B27; B27L; B27L1/00; B27L1/02; B27L1/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US819635A
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US1633121A
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US1774179A
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US1928076A
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US2133879A
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US2315844A
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US2365272A
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US2422757A
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US2382839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |