US2475245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the automatic control of machinery
Assignee: SALEM ENGINEERING (CANADA) Ltd
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Filing: 1947-05-01
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Granted: 1949-07-05
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Expires: 1967-05-01
Abstract
No abstract record available.
Inventors
- 👤 Eric W Leaver
- 👤 George R Mounce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:48
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/42; G05B19/421; B; B23; B23Q; B23Q15/00; Y; Y10; Y10S; Y10S131/00; Y10S131/91; Y10S82/00; Y10S82/905; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896; Y10T74/00; Y10T74/22; Y10T82/00; Y10T82/25; Y10T82/2502
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |