Patent US5517682A successfully refreshed from Google Patents.
US5517682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Class I cellular mobile telephone apparatus
Assignee: Mitsubishi Electric US Inc
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Filing: 1994-08-22
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Granted: 1996-05-14
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Expires: 2014-08-22
Abstract
Abstract A class 1 cellular mobile telephone apparatus has an LCD display and keypad provided in a transceiver main unit, which can be installed directly in a passenger compartment of a motor vehicle. The handset unit contains only a speaker and a microphone, eliminating the need for a microprocessor and associated supporting circuitry. The additional space within the handset is utilized for placement of a battery pack power supply for transportable operation of the apparatus. The apparatus is smaller, simpler and lighter in weight than conventional class 1 cellular apparatus.
Inventors
- 👤 Oscar Dayani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:07
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/0202; H04M1/026; H04M1/0262; H04B; H04B1/00; H04B1/38; H04B1/3822; H04M1/72; H04M1/725
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A cellular mobile telephone apparatus, comprising: a main unit, including transceiver means for transmitting and receiving communication signals in the 800 Mhz frequency range, an antenna coupled to said transceiver means for transmitting and receiving radio waves containing said communication signals, a keypad including a plurality of alphanumeric keys for inputting signals for controlling operation of said apparatus, a microprocessor which controls operation of said apparatus in response to signals inputted from said keypad, and display means for displaying alphanumeric information inputted by said keypad; and a handset unit connected to said main unit by an electrical cord, consisting of a speaker for converting received audio signals of said transceiver means into audible sounds, a microphone for converting sounds into electrical signals to be transmitted by said transceiver means, and a battery pack for powering said apparatus in a transportable operational mode.
Claim 2
Dependent Claim
142 words
A cellular mobile telephone apparatus, comprising: a main unit, including transceiver means for transmitting and receiving communication signals in the 800 Mhz frequency range, an antenna coupled to said transceiver means for transmitting and receiving radio waves containing said communication signals, a keypad including a plurality of alphanumeric keys for inputting signals for controlling operation of said apparatus, a microprocessor which controls operation of said apparatus in response to signals inputted from said keypad, and display means for displaying alphanumeric information inputted by said keypad; and a handset unit connected to said main unit by an electrical cord, consisting of a speaker for converting received audio signals of said transceiver means into audible sounds, a microphone for converting sounds into electrical signals to be transmitted by said transceiver means, and a battery pack for powering said apparatus in a transportable operational mode.
Claim 3
Dependent Claim
49 words
A cellular mobile telephone apparatus according to claim 1, wherein said apparatus is removably installed in the passenger compartment of a vehicle, said main unit further including power supply means connectable to a vehicle battery of said vehicle for providing power to said apparatus in an installed operational mode.
Claim 4
Dependent Claim
18 words
A cellular mobile telephone apparatus according to claim 1, wherein said display means comprises a liquid crystal display.
References Cited (Backward Citations)
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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) | 1999-05-14 | 1999-11-13 | 2000-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-14 | 2003-11-13 | 2004-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-14 | 2007-11-13 | 2008-05-14 | $7700.00 | Window Closed / Lapsed |