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US3428813A
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US
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Photodiodes and heat sensitive resistors in series controlling the same circuit
Assignee: Jones and Laughlin Steel Corp
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Filing: 1966-05-04
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Granted: 1969-02-18
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Konrad J Hofmeister
- 👤 Louis J Olcsan Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:53
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/22; G01K7/24; G01B; G01B11/00; G01D; G01D5/00; G01D5/26; G01D5/40; G01V; G01V8/00; G01V8/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3012469A
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US3235860A
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US3062963A
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US3213282A
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US3104323A
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US3210611A
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US3226551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |