Patent US3464672A successfully refreshed from Google Patents.
US3464672A
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US
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Sonic processing transducer
Assignee: MASSA DONALD P COHASSET
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Filing: 1966-10-26
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Granted: 1969-09-02
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Expires: 1986-10-26
Abstract
No abstract record available.
Inventors
- 👤 Frank Massa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407462A
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US2578505A
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US2585103A
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US3021120A
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US3056589A
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US3194640A
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US3165299A
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US3195586A
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US3180626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |