Patent US4064458A successfully refreshed from Google Patents.
US4064458A
Expired / Lapsed
US
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Electromagnetic wave communication systems
Assignee: Individual
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Filing: 1973-11-29
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Granted: 1977-12-20
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Expires: 1993-11-29
Abstract
Abstract The proper utilization of that portion of the millimeter wave spectrum that is particularly highly absorbed by the atmosphere is shown in conserve frequency spectrum while permitting a high density of users operating in relatively close proximity.
Inventors
- 👤 Bernard Collins De Loach, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:52
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A cable television system, including; a plurality of signal sources located within the atmosphere for radiating electromagnetic wave energy into the atmosphere solely within the band of frequencies between 55 and 63 gigahertz; and a multiplicity of groups of signal receivers located within the atmosphere for receiving said radiated wave energy, where a different group of said receivers is associated with a different one of said plurality of signal sources.
Claim 2
Dependent Claim
70 words
A cable television system, including; a plurality of signal sources located within the atmosphere for radiating electromagnetic wave energy into the atmosphere solely within the band of frequencies between 55 and 63 gigahertz; and a multiplicity of groups of signal receivers located within the atmosphere for receiving said radiated wave energy, where a different group of said receivers is associated with a different one of said plurality of signal sources.
References Cited (Backward Citations)
US3098225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |