Patent US2577558A successfully refreshed from Google Patents.
US2577558A
Expired / Lapsed
US
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Formation of the combustion space in particular for two-stroke engines
Assignee: Individual
•
Filing: 1947-06-13
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Granted: 1951-12-04
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Expires: 1967-06-13
Abstract
No abstract record available.
Inventors
- 👤 Zelezny Antonin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:00
CPC Classifications
F; F02; F02B; F02B25/00; F02B25/14; F02B19/00; F02B19/12; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB155034A
Cited
US1833861A
Cited
AT111397B
Cited
US1808384A
Cited
US1943495A
Cited
DE651632C
Cited
US2265677A
Cited
FR900686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |