US3493891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Avalanche breakdown semiconductor laser
Assignee: International Business Machines Corp
•
Filing: 1965-08-02
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Granted: 1970-02-03
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fern
- 👤 Kurt Weiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:21
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H10; H10H; H10H20/00; H10H20/80
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |