Patent US2019558A successfully refreshed from Google Patents.
US2019558A
Expired / Lapsed
US
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Multicylinder internal combustion engine
Assignee: Individual
•
Filing: 1930-05-12
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Granted: 1935-11-05
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Expires: 1950-05-12
Abstract
No abstract record available.
Inventors
- 👤 Alanson P Brush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:32
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0021; F02F7/0031; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B2075/1804; F02B2075/1864; F02B2275/00; F02B2275/22; F02B2275/34
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) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |