US3397024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical prism for use in beam divergence reducing apparatus
Assignee: KORAD CORP
•
Filing: 1964-09-01
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Granted: 1968-08-13
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Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 James H Boyden
- 👤 Laikin Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/04; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033; G02B19/0047; G02B27/00; G02B27/09; G02B27/0938; G02B27/095; G02B27/0972; G02B27/0977; H; H01; H01S; H01S3/00; H01S3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR773201A
Cited
SU147809A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |