Patent US4047652A successfully refreshed from Google Patents.
Patent US1656884A successfully refreshed from Google Patents.
US1656884A
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Form of internal-combustion engine
Assignee: Individual
•
Filing: 1925-01-05
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Granted: 1928-01-17
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Expires: 1945-01-05
Abstract
No abstract record available.
Inventors
- 👤 Phil C Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:15
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/28; F02B75/282; F02B75/26; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10S; Y10S123/00; Y10S123/06; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
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) | 1931-01-16 | 1931-07-18 | 1932-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-16 | 1935-07-18 | 1936-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-16 | 1939-07-18 | 1940-01-17 | $7700.00 | Window Closed / Lapsed |