US2967924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable temperature reference for instrument use
Assignee: Individual
•
Filing: 1958-06-12
•
Granted: 1961-01-10
•
Expires: 1978-06-12
Abstract
No abstract record available.
Inventors
- 👤 Clifford K Friend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906; G05D23/1909; G05D23/1927; G05D23/1928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2761916A
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US2759089A
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US2870310A
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US2898434A
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US2872556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |