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US2040652A
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Variable compression system for internal combustion engines
Assignee: Individual
•
Filing: 1933-03-01
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Granted: 1936-05-12
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Expires: 1953-03-01
Abstract
No abstract record available.
Inventors
- 👤 John P Gaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:13
CPC Classifications
F; F02; F02D; F02D15/00; F02D15/04; F02B; F02B2275/00; F02B2275/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/2705; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769; Y10T137/777; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86767
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) | 1939-05-12 | 1939-11-11 | 1940-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-12 | 1943-11-11 | 1944-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-12 | 1947-11-11 | 1948-05-12 | $7700.00 | Window Closed / Lapsed |