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US1946339A
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Fuel injection device for internal combustion engines
Assignee: Napier Turbochargers Ltd
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Filing: 1932-02-26
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Granted: 1934-02-06
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Expires: 1952-02-26
Abstract
No abstract record available.
Inventors
- 👤 Vigers Ronald Whitehair
- 👤 Chatterton Ernest Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/02; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4501
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-02-05 | 1937-08-07 | 1938-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-05 | 1941-08-07 | 1942-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-05 | 1945-08-07 | 1946-02-06 | $7700.00 | Window Closed / Lapsed |