US2513773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplementary feed device for internal-combustion engines
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1946-05-27
•
Granted: 1950-07-04
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 David E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:47
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1467222A
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US1552995A
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US1506166A
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US1758897A
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US1727197A
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US1889584A
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US1923473A
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US1924595A
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US2388085A
Cited
US2441301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |