US2184169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation pyrometer device
Assignee: United States Steel Corp
•
Filing: 1938-12-29
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Granted: 1939-12-19
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Expires: 1958-12-29
Abstract
No abstract record available.
Inventors
- 👤 Serdahl Louis Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:05
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/0037; G01J5/004; G01J5/0225; G01J5/0235; G01J5/04; G01J5/05; G01J5/051; G01J5/08; G01J5/0818; G01J5/0831
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |