US3420104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature measuring apparatus using semiconductor junction
Assignee: AT&T Inc
•
Filing: 1966-05-26
•
Granted: 1969-01-07
•
Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Troemel
- 👤 Edward H Weber Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:13
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA692008A
Cited
US3154947A
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US3045488A
Cited
US2974279A
Cited
US3260115A
Cited
US3142987A
Cited
US3268739A
Cited
US3281656A
Cited
US3299709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |