Patent US2411573A successfully refreshed from Google Patents.
US2928069A
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US
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Transducer
Assignee: Gulton Industries Inc
•
Filing: 1954-10-13
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Granted: 1960-03-08
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Expires: 1974-10-13
Abstract
No abstract record available.
Inventors
- 👤 Lucien A Petermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655; G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/0885; G01P15/09; H01; H01H; H01H57/00; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/545; H03H9/56; H03H9/562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2719929A
Cited
US1750124A
Cited
US1882398A
Cited
US1803275A
Cited
US1803273A
Cited
US2101272A
Cited
US2120985A
Cited
US2365738A
Cited
US2437270A
Cited
US2486560A
Cited
US2459019A
Cited
US2614143A
Cited
US2515446A
Cited
US2607858A
Cited
US2659829A
Cited
US2565159A
Cited
US2521136A
Cited
US2812452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |