Patent US2631832A successfully refreshed from Google Patents.
US2631832A
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US
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Economizer unit for carburetors
Assignee: Individual
•
Filing: 1949-11-12
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Granted: 1953-03-17
•
Expires: 1969-11-12
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:04
CPC Classifications
F; F02; F02M; F02M7/00; F02M7/12; F02M7/133; Y; Y10; Y10S; Y10S261/00; Y10S261/19; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2599
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US956287A
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US1982049A
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US2136959A
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US2135539A
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US2306903A
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US2311110A
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US2313258A
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US2563096A
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US2537347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |