US2553291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure temperature relay
Assignee: General Electric Co
•
Filing: 1948-06-18
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Granted: 1951-05-15
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Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 James R Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:58
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; H; H01; H01F; H01F27/00; H01F27/40; H01F27/402; H01F27/404; H01F27/406; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/55; H01H35/00; H01H35/24; H01H35/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE15929E
Cited
US1899746A
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US2103816A
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US2094191A
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US2220902A
Cited
US2169857A
Cited
US2439931A
Cited
US2395007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |