Patent US3504182A successfully refreshed from Google Patents.
US3504182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical communication system
Assignee: Boeing North American Inc
•
Filing: 1966-10-14
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Granted: 1970-03-31
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Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Vito F Pizzurro
- 👤 Harvey E Fiala
- 👤 Louis A De Bottari
- 👤 Shiro A Uchizono
- 👤 Lowell M Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:44
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/11; H04B10/112; H04B10/1123; H04B10/1125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1952326A
Cited
US2064894A
Cited
US2369622A
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US2437608A
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US2538063A
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US3020792A
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US2877284A
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US2958258A
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US2930894A
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US3111587A
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US2993997A
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US2953059A
Cited
US3038079A
Cited
US2982859A
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US3215842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |