US2599885A
Expired / Lapsed
US
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Automatic speed-synchronizing mechanism for twin engines
Assignee: Individual
•
Filing: 1950-09-14
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Granted: 1952-06-10
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Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 William E Benua
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:16
CPC Classifications
F; F02; F02D; F02D25/00; F02D25/02; G; G05; G05D; G05D13/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312; Y10T74/18568; Y10T74/18792; Y10T74/188; Y10T74/18808; Y10T74/19; Y10T74/19023; Y10T74/19047; Y10T74/20; Y10T74/20207; Y10T74/20341
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) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |