Patent US3480347A successfully refreshed from Google Patents.
US3480347A
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Optical device for protection against laser beams
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1967-02-16
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Granted: 1969-11-25
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Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Conrad Walter
- 👤 Siegfried Eberwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:16
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/022; A61F9/024; B; B23; B23K; B23K26/00; B23K26/02; B23K26/03; G; G02; G02B; G02B23/00; G02B23/16; G02B26/00; G02B26/02; G02B26/04; H; H01; H01S; H01S3/00; H01S3/005; H01S3/0064
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |