Patent US3533606A successfully refreshed from Google Patents.
US3533606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic carburetor system
Assignee: Individual
•
Filing: 1968-02-06
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Granted: 1970-10-13
•
Expires: 1988-02-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Thatcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:48
CPC Classifications
F; F02; F02M; F02M27/00; F02M27/08; Y; Y10; Y10S; Y10S261/00; Y10S261/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US890970A
Cited
US1809531A
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US2908443A
Cited
US2791994A
Cited
US2791990A
Cited
US3258254A
Cited
US3386710A
Cited
US3406951A
Cited
US3389894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |