US3436142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optical image-conducting devices embodying varying controlled stray light absorbing means
Assignee: American Optical Corp
•
Filing: 1965-05-17
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Granted: 1969-04-01
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Walter P Siegmund
- 👤 Noble S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/08; C; C03; C03B; C03B37/00; C03B37/10; C03B37/14; C03B37/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1900966A
Cited
US2992586A
Cited
US3033071A
Cited
US3247756A
Cited
US3273445A
Cited
US3323886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |