US3455667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making optical couplers
Assignee: American Optical Corp
•
Filing: 1966-05-06
•
Granted: 1969-07-15
•
Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 Elias Snitzer
- 👤 Wilfred P Bazinet Jr
- 👤 David C Hwalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/06; C03B23/00; C03B23/04; C03B23/047; C03B23/20; C03B23/207; C03B2203/00; C03B2203/10; C03B2203/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926552A
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US2608722A
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US2752731A
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US2915661A
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US3128408A
Cited
US3190735A
Cited
US3211540A
Cited
US3350183A
Cited
US3278283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |