US2528983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for saving fuel in internal-combustion engines
Assignee: Individual
•
Filing: 1945-04-17
•
Granted: 1950-11-07
•
Expires: 1965-04-17
Abstract
No abstract record available.
Inventors
- 👤 Weiss Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:29
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0005; F01L13/0015; F01L13/0036; F02; F02D; F02D17/00; F01L2013/0078; F02D2700/00; F02D2700/05; F02D2700/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1331787A
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US2197282A
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US2166968A
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US2186043A
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US2250814A
Cited
US2156560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |