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US2986935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation pyrometer
Assignee: US Philips Corp
•
Filing: 1953-12-18
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Granted: 1961-06-06
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Expires: 1973-12-18
Abstract
No abstract record available.
Inventors
- 👤 Cupido Piet Marinus
- 👤 Wilhelmus Jacobus Marie Gerwen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1553789A
Cited
US2357193A
Cited
GB640711A
Cited
US2635468A
Cited
US2672465A
Cited
US2696117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |