US3248666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically pumped combination gas cell and microwave resonating cavity
Assignee: GTC Corp
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Filing: 1963-03-12
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Granted: 1966-04-26
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Donald J Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:31
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/14; G01; G01N; G01N24/00; G01N24/006; H; H03; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A MICROWAVE RESONATING CAVITY FOR RETAINING A GASEOUS ATMOSPHERE INCLUDING AS AN ACTIVE ELEMENT AN ALKALI METAL VAPOR, SAID CAVITY COMPRISING A METAL WHICH IS IMMUNE TO CHEMICAL REACTION WITH SAID ALKALI METAL VAPOR, AND WINDOW IN SAID CAVITY FOR ADMITTING ELECTROMAGNETIC WAVES OF A FREQUENCY FOR OPTICALLY PUMPING SAID ALKALI METAL VAPOR.
References Cited (Backward Citations)
US3165705A
Cited
US3038126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |