US2501738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine structure
Assignee: Individual
•
Filing: 1945-04-09
•
Granted: 1950-03-28
•
Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Daniel H Prutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; B23G1/20; Y; Y10; Y10S; Y10S29/00; Y10S29/066; Y10S29/092; Y10S29/093; Y10S29/101; Y10T; Y10T408/00; Y10T408/13; Y10T408/14; Y10T408/44; Y10T408/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1236414A
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US1398338A
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US1480495A
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US1991927A
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US1970218A
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US2084022A
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US2244925A
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US2254281A
Cited
US2250349A
Cited
US2254032A
Cited
US2253493A
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US2368359A
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US2346297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |