US2498212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoregulator
Assignee: PRECISION THERMOMETER AND INSTRUMENT CO
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Filing: 1947-01-27
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Granted: 1950-02-21
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Expires: 1967-01-27
Abstract
No abstract record available.
Inventors
- 👤 William D Laverell
- 👤 Thomas M Walton
- 👤 Fritz H Mumberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:19
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/16; H; H01; H01H; H01H29/00; H01H29/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |