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Patent US3495208A successfully refreshed from Google Patents.
US3495208A
Expired / Lapsed
US
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Method of and apparatus for regulating and maintaining constant the speed of driving motors
Assignee: Fried Krupp AG
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Filing: 1966-04-04
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Granted: 1970-02-10
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Walter Grada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:22
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/2855; G; G01; G01S; G01S7/00; G01S7/52; G01S7/52004; Y; Y10; Y10S; Y10S367/00; Y10S367/902; Y10S388/00; Y10S388/907; Y10S388/912
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) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |