US2744238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic thickness gauge
Assignee: Goodyear Tire and Rubber Co
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Filing: 1953-04-22
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Granted: 1956-05-01
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Expires: 1973-04-22
Abstract
No abstract record available.
Inventors
- 👤 Gilbert J C Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:33
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/08; G01B7/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ELECTRON GAUGE FOR INDICATING THE DIELECTRIC PROPERTY OF A MATERIAL PROXIMAL TO A SINGLE PROBE ELECTRODE OF THE GAUGE, WHICH GAUGE COMPRISES A PROBE ELECTRODE, AN ELECTRON TUBE OSCILLATOR SUPPLYING HIGH FREQUENCY ELECTRICAL ENERGY TO SAID PROBE ELECTRODE, SAID OSCILLATOR INCLUDING AN OSCILLATOR TRIODE HAVING A CONTROL GRID CAPACITATIVELY COUPLED TO SAID PROBE ELECTRODE, AND A SECOND ELECTRON TUBE HAVING A CONTROL GRID DIRECTLY
Claim 2
Dependent Claim
65 words
AN ELECTRON GAUGE FOR INDICATING THE DIELECTRIC PROPERTY OF A MATERIAL PROXIMAL TO A SINGLE PROBE ELECTRODE OF THE GAUGE, WHICH GAUGE COMPRISES A PROBE ELECTRODE, AN ELECTRON TUBE OSCILLATOR SUPPLYING HIGH FREQUENCY ELECTRICAL ENERGY TO SAID PROBE ELECTRODE, SAID OSCILLATOR INCLUDING AN OSCILLATOR TRIODE HAVING A CONTROL GRID CAPACITATIVELY COUPLED TO SAID PROBE ELECTRODE, AND A SECOND ELECTRON TUBE HAVING A CONTROL GRID DIRECTLY
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |