Patent US3533013A successfully refreshed from Google Patents.
US3533013A
Expired / Lapsed
US
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Optical maser having means for concentrating the pumping light energy in the central portion thereof
Assignee: Elton Industries Inc
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Filing: 1967-03-23
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Granted: 1970-10-06
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Expires: 1987-03-23
Abstract
No abstract record available.
Inventors
- 👤 Russell Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:28
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093; H01S3/0931; H01S3/10; H01S3/102; H01S3/1022; H01S3/1024
Claims Analysis
Total Claims: 0
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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) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |