US2438936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical transducer
Assignee: JPMorgan Chase Bank NA
•
Filing: 1943-10-06
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Granted: 1948-04-06
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Expires: 1963-10-06
Abstract
No abstract record available.
Inventors
- 👤 Warren P Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1471547A
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US1472558A
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US1587107A
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GB279878A
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US2147649A
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US2169304A
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US2122010A
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US2143175A
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US2216949A
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US2283285A
Cited
GB546202A
Cited
US2399820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |