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Patent US2695680A successfully refreshed from Google Patents.
US2695680A
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Air preconditioner for internalcombustion engines
Assignee: W WALTER YOUNG
•
Filing: 1949-02-28
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Granted: 1954-11-30
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Expires: 1969-02-28
Abstract
No abstract record available.
Inventors
- 👤 James H Lundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:13
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US438464A
Cited
US1205264A
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US1225269A
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US1489831A
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US1669181A
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US1878401A
Cited
US1925971A
Cited
US2216477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |