US3164993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for measuring a physical condition
Assignee: Shell USA Inc
•
Filing: 1960-08-17
•
Granted: 1965-01-12
•
Expires: 1980-08-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/36; G01N; G01N27/00; G01N27/02; G01N27/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A THERMOMETER COMPRISING: A METALLIC TUBULAR MEMBER CLOSED AT ONE END, SAID MEMBER BEING DISPOSED WITH ITS OUTER SURFACE IN CONTACT WITH THE MEDIUM WHOSE TEMPERATURE IS DESIRED; AN EXCITING COIL DISPOSED WITHIN SAID TUBULAR MEMBER, A PICK UP COIL DISPOSED WITHIN SAID TUBULAR MEMBER AND SPACED FROM SAID EXCITING COIL A DISTANCE AT LEAST EQUAL TO THE DIAMETER OF THE TUBULAR MEMBER; SAID PICK UP COIL BEING COUPLED TO THE INPUT SIDE OF A PHASE SHIFTING DEVICE AND SAID EXCITING COIL BEING COUPLED TO THE OUTPUT SIDE OF SAID PHASE SHIFTING MEANS WHEREBY SAID PHASE SHIFTING MEANS WILL OSCILLATE AT A FREQUENCY RELATED TO THE TEMPERATURE OF SAID TUBULAR MEMBER.
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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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |