Patent US2808737A successfully refreshed from Google Patents.
US2808737A
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Variable-speed transmission and method of operation
Assignee: Bullard Co
•
Filing: 1952-04-01
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Granted: 1957-10-08
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Iii Edward P Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:18
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; F16H37/00; F16H37/02; F16H37/06; F16H47/00; F16H47/02; F16H47/04; F16H37/08; F16H37/0833; F16H37/084; F16H2037/088; F16H37/10; F16H2037/102; F16H39/00; F16H2039/005; F16H2702/00; F16H2702/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19037
Claims Analysis
Total Claims: 0
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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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |