Patent US2497783A successfully refreshed from Google Patents.
US2497783A
Expired / Lapsed
US
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Radiation pyrometer
Assignee: Hagan Corp
•
Filing: 1945-07-24
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Granted: 1950-02-14
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Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Markson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1109880A
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US830845A
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US1109174A
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US1765056A
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US1844451A
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US1991152A
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US2055922A
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US2083317A
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US2191640A
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US2332212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |