US4845740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiotelephone system adapted to read a credit card
Assignee: Canon Inc
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Filing: 1988-12-05
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Granted: 1989-07-04
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Expires: 2008-12-05
Abstract
Abstract A radio phone equipment for credit card is adapted to transfer part or a whole of credit card or charge card information read by a card reader as well as a dial number dialed by a key pad to a mobile telecommunication switching office by means of a modem and a transmitter/receiver, and in case of said credit card or charge card being valid, switching, on the basis of a designation on a voice channel transmitted from said mobile telecommunication switching office, or transmitting and receiving frequency to said voice channel to construct a speech channel, and furthermore detecting on-hook of a handset produced upon finishing talking to reset the equipment.
Inventors
- 👤 Katsumi Tokuyama
- 👤 Kanji Arai
- 👤 Takuji Ishikawa
- 👤 Haruhiko Akiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F17/00; G07F17/0014; G07F7/12; H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A radiotelephone system adapted to read a credit card for charging comprising: a means for inputting a credit card information signal stored on the credit card, which includes a card expiration date signal and a primary access number signal: a clock circuit means for generating a present date signal; a means for comprising said expiration date signal with said present date signal; and a means for transmitting said credit card information signal with said card expiration date signal deleted only if a date indicated by said present date signal is prior to or equal to a date indicated by said card expiration date signal.
Claim 2
Dependent Claim
104 words
A radiotelephone system adapted to read a credit card for charging comprising: a means for inputting a credit card information signal stored on the credit card, which includes a card expiration date signal and a primary access number signal: a clock circuit means for generating a present date signal; a means for comprising said expiration date signal with said present date signal; and a means for transmitting said credit card information signal with said card expiration date signal deleted only if a date indicated by said present date signal is prior to or equal to a date indicated by said card expiration date signal.
Claim 3
Dependent Claim
22 words
A radiotelephone system according to claim 1, wherein a radio control data link is used for transmitting said credit card information signal.
Claim 4
Dependent Claim
27 words
A radiotelephone system according to claim 1, wherein said credit card information signal including at least said primary access number signal is transmitted over a voice channel.
Claim 5
Dependent Claim
27 words
A radiotelephone system according to claim 1, further including a visible indicating means or an audible indicating means for indicating said comparison effected by said comparing means.
References Cited (Backward Citations)
GB1565445A
Cited
US4399330A
Cited
GB2105149A
Cited
EP0088639A2
Cited
US4439636A
Cited
WO1984001073A1
Cited
US4640986A
Cited
US4759056A
Cited
WO1986003915A1
Cited
US4756020A
Cited
US4763191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |