Patent US2916265A successfully refreshed from Google Patents.
US2916265A
Expired / Lapsed
US
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Ultrasonic apparatus
Assignee: ULTRASONIC DEV Inc
•
Filing: 1954-11-22
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Granted: 1959-12-08
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Towne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:23
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B01F; B01F31/00; B01F31/80; B01F31/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1863222A
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US2138839A
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US2163650A
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US2430013A
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US2511624A
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US2448372A
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US2650991A
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US2570081A
Cited
US2585103A
Cited
US2565159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |