US2441284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Altitude compensating ignition device
Assignee: Stewart Warner Corp
•
Filing: 1943-08-05
•
Granted: 1948-05-11
•
Expires: 1963-08-05
Abstract
No abstract record available.
Inventors
- 👤 William C Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:55
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208926A
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US1493033A
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US1565274A
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US1898691A
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US2117211A
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US2031293A
Cited
US2297386A
Cited
US2340734A
Cited
US2352411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |