US2147989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection apparatus for internal combustion engines
Assignee: Individual
•
Filing: 1935-10-28
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Granted: 1939-02-21
•
Expires: 1955-10-28
Abstract
No abstract record available.
Inventors
- 👤 Puurmann Juri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/30; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1376; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1942-02-20 | 1942-08-22 | 1943-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-20 | 1946-08-22 | 1947-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-20 | 1950-08-22 | 1951-02-21 | $7700.00 | Window Closed / Lapsed |