US3538452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser switching device
Assignee: Optics Tech Inc
•
Filing: 1965-04-12
•
Granted: 1970-11-03
•
Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Burgwald
- 👤 Norman A Peppers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
G; G02; G02F; G02F3/00; H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/07; H01S3/10; H01S3/106; H01S3/11; H01S3/1123; H01S3/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3270291A
Cited
US3311845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |