Patent US3751600A successfully refreshed from Google Patents.
US3751600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination microphone and control stand for loudspeaking telephone set
Assignee: AT&T Inc
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Filing: 1971-12-22
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Granted: 1973-08-07
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Expires: 1991-12-22
Abstract
Abstract In a combination control stand and microphone support structure for a loudspeaking telephone set, an omnidirectional microphone is mounted within a pedestal supported body portion with the top thereof providing a base for control switch actuating buttons, the microphone being entirely hidden from view with its face pointing downwardly at the desk top or other supporting structure.
Inventors
- 👤 G Reichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A combination control stand and microphone assembly for a loudspeaking telephone set comprising a body portion comprising an open top enclosure for containing electrical circuit elements of said telephone set, a substantially cylindrical microphone also contained in said enclosure, said microphone being mounted in said enclosure facing downwardly and with its principal axis substantially vertical, said enclosure having a port in its underface to provide access to said microphone for acoustic energy, a base for said assembly having a horizontal planar surface substantially normal to said axis and including a pedestal for maintaining said underface of said enclosure and said planar surface in a predetermined spaced apart relationship and to provide equal response of said microphone to predetermined acoustic signals generated at equidistant points randomly located about said axis, and a lid for covering said enclosure, at least a portion of said lid being pivotally mounted in said enclosure for manually controlling particular ones of said circuit elements.
Claim 2
Dependent Claim
158 words
A combination control stand and microphone assembly for a loudspeaking telephone set comprising a body portion comprising an open top enclosure for containing electrical circuit elements of said telephone set, a substantially cylindrical microphone also contained in said enclosure, said microphone being mounted in said enclosure facing downwardly and with its principal axis substantially vertical, said enclosure having a port in its underface to provide access to said microphone for acoustic energy, a base for said assembly having a horizontal planar surface substantially normal to said axis and including a pedestal for maintaining said underface of said enclosure and said planar surface in a predetermined spaced apart relationship and to provide equal response of said microphone to predetermined acoustic signals generated at equidistant points randomly located about said axis, and a lid for covering said enclosure, at least a portion of said lid being pivotally mounted in said enclosure for manually controlling particular ones of said circuit elements.
Claim 3
Dependent Claim
20 words
Apparatus in accordance with claim 8 wherein the mouth of said port is less than one inch above said base.
Claim 4
Dependent Claim
31 words
Apparatus in accordance with claim 1 wherein a fixed portion of said lid has an aperture extending through the surface thereof and a volume control operating means extending through said aperture.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |