US2473845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1945-07-20
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Granted: 1949-06-21
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Expires: 1965-07-20
Abstract
No abstract record available.
Inventors
- 👤 Herman F Barsun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/20; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063; Y10T74/20636; Y10T74/20714
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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |