Patent US2602435A successfully refreshed from Google Patents.
US2602435A
Expired / Lapsed
US
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Auxiliary air supplying device for internal-combustion engines
Assignee: Individual
•
Filing: 1950-05-20
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Granted: 1952-07-08
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Expires: 1970-05-20
Abstract
No abstract record available.
Inventors
- 👤 Boyan Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
F; F02; F02M; F02M21/00; F02M2700/00; F02M2700/13; F02M2700/1305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1142779A
Cited
US1231574A
Cited
US1168309A
Cited
US1345432A
Cited
FR681316A
Cited
US2169622A
Cited
US2518082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |