Patent US2948154A successfully refreshed from Google Patents.
US2948154A
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US
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Acoustic impedance transformer
Assignee: Cavitron Corp
•
Filing: 1956-02-16
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Granted: 1960-08-09
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Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Kleesattel Claus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:42
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/07; A61C3/00; A61C3/02; A61C3/03; B; B06; B06B; B06B3/00; Y; Y10; Y10T; Y10T74/00; Y10T74/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US704385A
Cited
US2651148A
Cited
US2580716A
Cited
US2704333A
Cited
US2680333A
Cited
US2723386A
Cited
US2774193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |