US2745372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for generating sound waves
Assignee: Individual
•
Filing: 1952-04-24
•
Granted: 1956-05-15
•
Expires: 1972-04-24
Abstract
No abstract record available.
Inventors
- 👤 Chertoff Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:47
CPC Classifications
F; F02; F02M; F02M27/00; F02M27/08; Y; Y10; Y10S; Y10S261/00; Y10S261/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1939302A
Cited
US1927091A
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US1792858A
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US2153500A
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US2364987A
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US2454900A
Cited
US2535680A
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US2569377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |