Patent US3087065A successfully refreshed from Google Patents.
US3087065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light communication system
Assignee: Engelhard Hanovia Inc
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Filing: 1958-09-26
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Granted: 1963-04-23
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Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Edward C Mutschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:36
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/11; H04B10/112; H04B10/1121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A LIGHT COMMUNICATION SYSTEM, AN ELECTRICALLY ENERGIZED HIGH PRESSURE ARC LAMP HAVING A RESIDUAL LIGHT EMISSION, MEANS FOR OPERATING THE LAMP AT A UNIFORM QUIESCENT LOW LIGHT OUTPUT-LOW VOLTAGE LEVEL MEANS FOR SUPPLYING A PERIODICALLY PULSATING CARRIER CURRENT TO SAID LAMP, THE DURATION OF THE QUIESCENT VOLTAGE LEVEL IN EACH SUPPLIED PULSE CYCLE BEING AT LEAST EQUAL TO THE DURATION OF THE RESIDUAL LIGHT EMISSION, AND MEANS FOR MODULATING THE SUPPLIED CARRIER CURRENT.
Claim 2
Dependent Claim
74 words
IN A LIGHT COMMUNICATION SYSTEM, AN ELECTRICALLY ENERGIZED HIGH PRESSURE ARC LAMP HAVING A RESIDUAL LIGHT EMISSION, MEANS FOR OPERATING THE LAMP AT A UNIFORM QUIESCENT LOW LIGHT OUTPUT-LOW VOLTAGE LEVEL MEANS FOR SUPPLYING A PERIODICALLY PULSATING CARRIER CURRENT TO SAID LAMP, THE DURATION OF THE QUIESCENT VOLTAGE LEVEL IN EACH SUPPLIED PULSE CYCLE BEING AT LEAST EQUAL TO THE DURATION OF THE RESIDUAL LIGHT EMISSION, AND MEANS FOR MODULATING THE SUPPLIED CARRIER CURRENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |