Patent US2804778A successfully refreshed from Google Patents.
US2804778A
Expired / Lapsed
US
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Variable driving mechanism
Assignee: Wallace & Tiernan Co Inc
•
Filing: 1952-08-26
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Granted: 1957-09-03
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Expires: 1972-08-26
Abstract
No abstract record available.
Inventors
- 👤 George M Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:02
CPC Classifications
F; F16; F16H; F16H27/00; F16H27/04; F16H27/10; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1524; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/21; Y10T74/2101; Y10T74/2107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US210940A
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US2326136A
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US1147910A
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US1602122A
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US2328542A
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US2356167A
Cited
US2558679A
Cited
US2484471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |