Patent US2838943A successfully refreshed from Google Patents.
US2838943A
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US
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Heat motor for producing rotary motion
Assignee: Dole Valve Co
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Filing: 1955-12-09
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Granted: 1958-06-17
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Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Edward E Modes
- 👤 Mullapudi M Reddi
- 👤 William E Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:43
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/02; F25C5/04; Y; Y10; Y10S; Y10S236/00; Y10S236/05; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/20; Y10T74/20006; Y10T74/21; Y10T74/2173; Y10T74/2179
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |