Patent US2857558A successfully refreshed from Google Patents.
Patent US1435979A successfully refreshed from Google Patents.
US1435979A
Expired / Lapsed
US
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Electrical controller
Assignee: Cutler Hammer Manufacturing Co
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Filing: 1920-01-28
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Granted: 1922-11-21
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Expires: 1940-01-28
Abstract
No abstract record available.
Inventors
- 👤 Harrison P Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/20; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4458; Y10T83/446; Y10T83/4587; Y10T83/4592; Y10T83/566; Y10T83/626; Y10T83/637
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) | 1925-11-20 | 1926-05-22 | 1926-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-20 | 1930-05-22 | 1930-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-20 | 1934-05-22 | 1934-11-21 | $7700.00 | Window Closed / Lapsed |