US1557073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1919-06-09
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Granted: 1925-10-13
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Expires: 1939-06-09
Abstract
No abstract record available.
Inventors
- 👤 John S Mcwhirter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:15
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/32; B60L2200/00; B60L2200/26; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2014; Y10T74/20576; Y10T74/20732; Y10T74/20744; Y10T74/20756; Y10T74/20762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-10-12 | 1929-04-13 | 1929-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-12 | 1933-04-13 | 1933-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-12 | 1937-04-13 | 1937-10-13 | $7700.00 | Window Closed / Lapsed |