Patent US2547173A successfully refreshed from Google Patents.
US2547173A
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Long wave length infrared radiation detector
Assignee: Philips Laboratories Inc
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Filing: 1950-03-09
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Granted: 1951-04-03
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Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Edmund S Rittner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
H; H10; H10P; H10P95/00; G; G01; G01J; G01J5/00; G01J5/10; G01J5/20; G01J5/22; G01J5/24; H10F; H10F30/00; H10F30/20; Y; Y10; Y10S; Y10S62/00; Y10S62/19
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |