Patent US2987304A successfully refreshed from Google Patents.
US2987304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: Individual
•
Filing: 1959-09-21
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Granted: 1961-06-06
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Robert F Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:26
CPC Classifications
F; F02; F02M; F02M21/00; F02M17/00; F02M17/02; F02M21/02; F02M21/0218; F02M21/023; F02M21/0239; F02M21/04; F02M9/00; F02M9/02; F02M9/06; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |