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US2640089A
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Thermocouple cold-end compensator
Assignee: Weston Electric Instrument Corp
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Filing: 1950-01-06
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Granted: 1953-05-26
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Expires: 1970-01-06
Abstract
No abstract record available.
Inventors
- 👤 Roswell W Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/10; G01K7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1432864A
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US2025534A
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US2228600A
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US2235835A
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US2417923A
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US2446283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |