US3284633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal transmission and reception system comprising frequency modulated light beam
Assignee: RCA Corp
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Filing: 1963-12-24
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Granted: 1966-11-08
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Expires: 1983-12-24
Abstract
No abstract record available.
Inventors
- 👤 Hathaway Jarrett Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50; H04B10/516; H04B10/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A TRANSMITTER FOR TRANSMITTING INFORMATION BY MODULATED LIGHT, SAID TRANSMITTER COMPRISING MEANS FOR PRODUCING A CONTINUOUS WAVE VOLTAGE THAT IS FREQUENCY MODULATED IN ACCORDANCE WITH THE INFORMATION TO BE TRANSMITTED, A GLOW DISCHARGE LAMP, AND MEANS FOR APPLYING SAID FREQUENCY MODULATED VOLTAGE TO SAID LAMP FOR INTENSITY MODULATING ITS LIGHT OUTPUT, SAID VOLTAGE WAVE HAVING A FREQUENCY SUFFICIENTLY LOW SO THAT SAID GLOW LAMP CAN BECOME EXTINGUISHED ONCE PER CYCLE.
Claim 2
Dependent Claim
70 words
A TRANSMITTER FOR TRANSMITTING INFORMATION BY MODULATED LIGHT, SAID TRANSMITTER COMPRISING MEANS FOR PRODUCING A CONTINUOUS WAVE VOLTAGE THAT IS FREQUENCY MODULATED IN ACCORDANCE WITH THE INFORMATION TO BE TRANSMITTED, A GLOW DISCHARGE LAMP, AND MEANS FOR APPLYING SAID FREQUENCY MODULATED VOLTAGE TO SAID LAMP FOR INTENSITY MODULATING ITS LIGHT OUTPUT, SAID VOLTAGE WAVE HAVING A FREQUENCY SUFFICIENTLY LOW SO THAT SAID GLOW LAMP CAN BECOME EXTINGUISHED ONCE PER CYCLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |