Patent US3156397A successfully refreshed from Google Patents.
Patent US3528787A successfully refreshed from Google Patents.
US3528787A
Expired / Lapsed
US
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Fuel carburetion apparatus
Assignee: MACBEE ENG CORP
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Filing: 1967-03-21
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Granted: 1970-09-15
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Expires: 1987-03-21
Abstract
No abstract record available.
Inventors
- 👤 John E Hallberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:43
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/04; F02M21/0218; F02M21/023; F02M21/0239; F02B; F02B43/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970475A
Cited
US1846654A
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US2062496A
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US2144017A
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US3184295A
Cited
GB1011151A
Cited
US3259378A
Cited
US3342463A
Cited
US3307837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |