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US2980957A
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Method and apparatus for use in the fabrication of light-conducting devices
Assignee: American Optical Corp
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Filing: 1958-08-11
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Granted: 1961-04-25
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Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/029; C03B37/027; C03B37/075; C03B2205/00; C03B2205/60; C03B2205/62; C03B2205/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1663628A
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US1565307A
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US2313296A
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CH239719A
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US2502312A
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US2471752A
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US2825260A
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US2780889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |