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US2912723A
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Method of and means for felting with variable suction
Assignee: Weyerhaeuser Timber Co
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Filing: 1953-01-30
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Granted: 1959-11-17
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Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 James R Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:44
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US572650A
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US2317895A
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US2544019A
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US2581069A
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US2569765A
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US2698271A
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US2618816A
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US2646381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |