US2728836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature sensing element
Assignee: Phillips Petroleum Co
•
Filing: 1951-06-07
•
Granted: 1955-12-27
•
Expires: 1971-06-07
Abstract
No abstract record available.
Inventors
- 👤 Boisblanc Deslonde R De
- 👤 Jr Ross S Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:37
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE232676C
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US859890A
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US1144776A
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US1858265A
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US2106249A
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DE644931C
Cited
US2102955A
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US2316872A
Cited
FR888007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |