US3436677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneto-optic radiation control and modulator
Assignee: International Business Machines Corp
•
Filing: 1964-06-29
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Granted: 1969-04-01
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Erhard Max
- 👤 Werner W Kulcke
- 👤 Kurt M Kosanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/09; G02F1/091; H; H01; H01S; H01S3/00; H01S3/10; H01S3/105
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |