Patent US3176247A successfully refreshed from Google Patents.
US3176247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fajans maser
Assignee: —
•
Filing: —
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Granted: 1965-03-30
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Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:24
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03C7/022; H01; H01J; H01J25/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
IN A MASER, A PRIMARY EMITTER BODY OF GASEOUS PARTICLES OF MERCURY 198; MEANS FOR SUPPLYING ENERGY TO SAID BODY FOR EXCITING EMISSION OF ELECTROMAGNETIC RADIATION THEREFROM AT A WAVE LENGTH OF 2537 ANGSTROM UNITS; A SECONDARY EMITTER BODY OF GASEOUS PARTICLES OF MERCURY 201 EXPOSED TO SAID RADIATION, WHEREBY SAID SECONDARY EMITTER BODY IS ENERGIZED TO EMIT RADIATION AT A FREQUENCY OF SUBSTANTIALLY 14,060 MEGACYCLES PER SOUND; AND MEANS FOR WITHDRAWING THE EMITTED RADIATION FROM SAID SECOND BODY.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |