US2438512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic switch
Assignee: International Standard Electric Corp
•
Filing: 1943-03-01
•
Granted: 1948-03-30
•
Expires: 1963-03-01
Abstract
No abstract record available.
Inventors
- 👤 Mehut Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:26
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1232456A
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US1174149A
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US1849481A
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US1869204A
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US1934894A
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US1951245A
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US2027068A
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US2168244A
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US2117213A
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US2260636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |