US2444554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detaching system
Assignee: Whitin Machine Works Inc
•
Filing: 1942-08-13
•
Granted: 1948-07-06
•
Expires: 1962-08-13
Abstract
No abstract record available.
Inventors
- 👤 Frank L Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:05
CPC Classifications
D; D01; D01G; D01G19/00; D01G19/06; D01G19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1052634A
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US1169046A
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US1339643A
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US1394054A
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GB151017A
Cited
US1464098A
Cited
US1818555A
Cited
US1975126A
Cited
US2111139A
Cited
US2353812A
Cited
US2271191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |