US3102232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave electrical thickness comparator utilizing a waveguide probe
Assignee: North American Aviation Corp
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Filing: 1960-06-17
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Granted: 1963-08-27
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Expires: 1980-06-17
Abstract
No abstract record available.
Inventors
- 👤 James D Leonard
- 👤 George T Stropki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:30
CPC Classifications
G; G01; G01B; G01B15/00; G01B15/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A MICROWAVE ELECTRICAL THICKNESS COMPARATOR CONSISTING OF: OSCILLOSCOPE PRESENTATION MEANS, BACKWARD WAVE OSCILLATOR MEANS DEVELOPING A FREQUENCY-SWEPT OUTPUT SIGNAL, CAVITY FREQUENCY METER MEANS ABSORBING A PORTION OF SAID BACKWARD WAVE OSCILLATOR MEANS OUTPUT SIGNAL, AND WAVEGUIDE PROBE MEANS OPERATIVELY CONNECTED TO SAID CAVITY MEANS TO RECEIVE AND RADIATE THE UNABSORBED PORTION OF SAID BACKWARD WAVE OSCILLATOR MEANS OUTPUT SIGNAL, SAID WAVEGUIDE PROBE MEANS CONTAINING A MICROWAVE-SENSITIVE CRYSTAL MEANS WHICH IS OPERATIVELY CONNECTED TO SAID OSCILLOSCOPE PRESENTATION MEANS AND WHICH DETECTS A CONDITION CAUSED BY MICROWAVE ENERGY REDIATED FROM AND REFLECTED INTO SAID PROBE MEANS.
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |