US3504979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical communication system
Assignee: General Dynamics Corp
•
Filing: 1965-10-21
•
Granted: 1970-04-07
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Stephany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:47
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/66; G01S17/74; G01S7/00; G01S7/48; G01S7/497; G01S7/4972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2740901A
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US3323408A
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US3270612A
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US3378687A
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US3293643A
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US3287562A
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US3364356A
Cited
US3360987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |