US3242439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visible output gaseous optical maser with mode pattern selector
Assignee: AT&T Inc
•
Filing: 1962-06-21
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Granted: 1966-03-22
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Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jameson D Rigden
- 👤 Alan D White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:16
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08018; H01S3/0804; H01S3/0805; H01S3/14; H01S3/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
IN AN OPTICAL MASER PROVIDING VISIBLE COHERENT RADIATION IN A FREQUENCY RANGE INCLUDING 6328 ANGSTROM UNITS, AN OPTICAL CAVITY CONTAINING AN ACTIVE MATERIAL COMPRISING A MIXTURE OF HELIUM AND NEON GASES CONFINED UNDER PRESSURE IN AN ENCLOSURE HAVING A DIAMETER AND A LENGTH SUITABLE FOR LASER ACTION IN SAID VISIBLE FREQUENCY RANGE, SAID CAVITY COMPRISING A PAIR OF MIRRORS HAVING A PEAK REFLECTIVITY AT ABOUT 6340 ANGSTROM UNITS WHEREBY SAID RADIATION IS SELECTIVELY EMITTED AT 6328 ANGSTROM UNITS.
References Cited (Backward Citations)
US2476034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |