Patent US3371233A successfully refreshed from Google Patents.
US3371233A
Expired / Lapsed
US
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Multifrequency ultrasonic cleaning equipment
Assignee: Ultrasonic Power Corp
•
Filing: 1965-06-28
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Granted: 1968-02-27
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Edward G Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:10
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0648; B06B1/0207; B06B1/0223; B06B1/0269; B06B1/0276; B06B2201/00; B06B2201/20; B06B2201/70; B06B2201/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3117768A
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US3191913A
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US3223907A
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US3293456A
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US3180626A
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US3311842A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |