Patent US2451746A successfully refreshed from Google Patents.
US2451746A
Expired / Lapsed
US
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Fever thermometer
Assignee: Individual
•
Filing: 1945-11-26
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Granted: 1948-10-19
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Expires: 1965-11-26
Abstract
No abstract record available.
Inventors
- 👤 Kathryn M Keller
- 👤 Elizabeth H Keller
- 👤 Anne H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:45
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/04; G01K5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190523500A
Cited
US1034735A
Cited
US1782599A
Cited
US1903432A
Cited
US1999427A
Cited
US2084875A
Cited
US2047801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |