US2422273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens type radiation pyrometer
Assignee: Brown Instruments Co
•
Filing: 1942-11-28
•
Granted: 1947-06-17
•
Expires: 1962-11-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Wannamaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:38
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; G01J5/02; G01J5/04; G01J5/06; G01J5/08; G01J5/0806; G01J5/0814; G01J5/084; G01J5/0859; G01J5/048
Claims Analysis
Total Claims: 0
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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) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |