US2461998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse echo system and pulse indicating means
Assignee: General Electric Co
•
Filing: 1943-11-17
•
Granted: 1949-02-15
•
Expires: 1963-11-17
Abstract
No abstract record available.
Inventors
- 👤 Franklin G Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:55
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178074A
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US2143035A
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US2121359A
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US2405238A
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US2312761A
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US2300999A
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US2405239A
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GB552072A
Cited
US2416088A
Cited
US2395966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |