Patent US3274832A successfully refreshed from Google Patents.
US3274832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital temperature measurement and display system
Assignee: RIVERBANK LAB
•
Filing: 1963-10-07
•
Granted: 1966-09-27
•
Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:11
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
APPARATUS FOR MEASURING TEMPERATURE AND DIRECT DIGITAL DISPLAY OF TEMPERATURE COMPRISING A TEMPERATURE SENSITIVE TRANSDUCER PRODUCING A FUNDAMENTAL FREQUENCY PROPORTIONAL TO TEMPERATURE, A FREQUENCY MULTIPLIER FUNDAMENTAL FREQUENCY SIGNAL OF SAID TRANSDUCER CONNECTED TO THE INPUT OF SAID MULTIPLIER, AN AND GAT, A CONTROL CIRCUIT, THE MULTIPLIED FREQUENCY SIGNAL OUTPUT OF SAID MULTIPLIER CONNECTED TO INPUT OF SAID AND GATE, SAID CONTROL CIRCUIT INPUT CONNECTED WITH SAID TRANSDUCER AND RESPONSIVE TO THE FUNDAMENTAL FREQUENCY SIGNAL OUPUT, SAID CONTROL CIRCUIT CONNECTED TO SAID AND GATE, AND SAID AND GATE RESPONSIVE TO SIGNALS FROM SAID CONTROL CIRCUIT AND MULTIPLIER SO THAT THE GATE OUTPUT SIGNAL ALWAYS IN THE
Claim 2
Dependent Claim
105 words
APPARATUS FOR MEASURING TEMPERATURE AND DIRECT DIGITAL DISPLAY OF TEMPERATURE COMPRISING A TEMPERATURE SENSITIVE TRANSDUCER PRODUCING A FUNDAMENTAL FREQUENCY PROPORTIONAL TO TEMPERATURE, A FREQUENCY MULTIPLIER FUNDAMENTAL FREQUENCY SIGNAL OF SAID TRANSDUCER CONNECTED TO THE INPUT OF SAID MULTIPLIER, AN AND GAT, A CONTROL CIRCUIT, THE MULTIPLIED FREQUENCY SIGNAL OUTPUT OF SAID MULTIPLIER CONNECTED TO INPUT OF SAID AND GATE, SAID CONTROL CIRCUIT INPUT CONNECTED WITH SAID TRANSDUCER AND RESPONSIVE TO THE FUNDAMENTAL FREQUENCY SIGNAL OUPUT, SAID CONTROL CIRCUIT CONNECTED TO SAID AND GATE, AND SAID AND GATE RESPONSIVE TO SIGNALS FROM SAID CONTROL CIRCUIT AND MULTIPLIER SO THAT THE GATE OUTPUT SIGNAL ALWAYS IN THE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |