US2500190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed regulator
Assignee: LEE ENGINEERING RES CORP
•
Filing: 1943-12-06
•
Granted: 1950-03-14
•
Expires: 1963-12-06
Abstract
No abstract record available.
Inventors
- 👤 Lee Royal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:37
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/18; H02P25/182; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/924; Y10S388/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL37872C
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US438656A
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US1767146A
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US1857202A
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US1795240A
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US2021196A
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US2103589A
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US2113234A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |