Patent US2539386A successfully refreshed from Google Patents.
US2539386A
Expired / Lapsed
US
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Rotary control mechanism
Assignee: Individual
•
Filing: 1945-05-16
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Granted: 1951-01-30
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Expires: 1965-05-16
Abstract
No abstract record available.
Inventors
- 👤 Donald E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/04; H01H23/06; F; F16; F16J; F16J15/00; F16J15/50; F16J15/52; H01H9/00; H01H9/02; H01H9/04; H01H2009/048; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20744; Y10T74/20876; Y10T74/2093
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) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |