Patent US2252644A successfully refreshed from Google Patents.
US2252644A
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US
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Speed controlling device
Assignee: Individual
•
Filing: 1936-11-27
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Granted: 1941-08-12
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Expires: 1956-11-27
Abstract
No abstract record available.
Inventors
- 👤 Robin Leo
- 👤 Mathieu Van Roggen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:34
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W10/00; B60W10/04; B60W10/06; B60W10/10; B60W2510/00; B60W2510/06; B60W2510/0638; Y; Y10; Y10S; Y10S74/00; Y10S74/02; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/1926; Y10T74/19265; Y10T74/19293; Y10T74/19298; Y10T74/19326
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |