US2493078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion unit for radiation pyrometers
Assignee: Leeds and Northrup Co
•
Filing: 1945-08-20
•
Granted: 1950-01-03
•
Expires: 1965-08-20
Abstract
No abstract record available.
Inventors
- 👤 Harold G Mead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:25
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2054382A
Cited
US2232594A
Cited
US2184169A
Cited
US2266416A
Cited
US2343242A
Cited
US2390578A
Cited
US2366285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |