US2601779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for generating supersonic waves
Assignee: Sperry Products Inc
•
Filing: 1946-05-10
•
Granted: 1952-07-01
•
Expires: 1966-05-10
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Firestone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/04; B06B1/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1109811A
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US1130657A
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US2079612A
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US2105479A
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US2307989A
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US2412240A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |