US3019660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic transducer
Assignee: Gulton Industries Inc
•
Filing: 1956-04-26
•
Granted: 1962-02-06
•
Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 Welkowitz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:34
CPC Classifications
B; B06; B06B; B06B3/00; Y; Y10; Y10S; Y10S181/00; Y10S181/40; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1565; Y10T74/1576
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1380869A
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US2044807A
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US2410112A
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FR852150A
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US2413012A
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US2328496A
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US2769161A
Cited
US2607858A
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US2787777A
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US2748298A
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US2725219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |