US2813203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical systems for radiation pyrometers
Assignee: Leeds and Northrup Co
•
Filing: 1950-04-07
•
Granted: 1957-11-12
•
Expires: 1970-04-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Machler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:07
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/08; G01J5/07; G01J5/0806; G01J5/0831; G01J5/0859; G01J5/0893; G02; G02B; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033; G02B19/0076; G02B19/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB324500A
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US2212211A
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US2357193A
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US2432920A
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US2504384A
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US2441672A
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US2489835A
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US2562538A
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US2601508A
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US2627530A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |