Patent US2640152A successfully refreshed from Google Patents.
US2640152A
Expired / Lapsed
US
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Control system for cutting apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1950-05-31
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Granted: 1953-05-26
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Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 Edward C Hartwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:30
CPC Classifications
B; B23; B23D; B23D36/00; B23D36/0008; B23D36/0033; B23D36/0041; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0515; Y10T83/0519
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401396A
Cited
US2429500A
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US2428592A
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US2563828A
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US2542631A
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US2451816A
Cited
US2538515A
Cited
US2529161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |