US2659537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding mechanism for wood pulp grinders
Assignee: William Kennedy & Sons Ltd
•
Filing: 1950-10-27
•
Granted: 1953-11-17
•
Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 James J Keon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:19
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US606746A
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US2282887A
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US864934A
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US1106988A
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US1160792A
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US1515178A
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US1705097A
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US1987946A
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US2209340A
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US2271396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |