US2627720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circumferentially arranged combustion chamber with arcuate walls defining an air flow path between chambers
Assignee: Packard Motor Car Co
•
Filing: 1948-10-08
•
Granted: 1953-02-10
•
Expires: 1968-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert M Williams
- 👤 George F Wislicenus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2445114A
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US2326072A
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US2477683A
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US2410450A
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US2471892A
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US2475911A
Cited
GB588572A
Cited
US2526122A
Cited
US2511432A
Cited
US2417445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |