Communication apparatus with facilities for changing to a pulse or dial mode
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 7, 1990
Grant Date -
N/A
app pub date -
Dec 29, 1988
filing date -
Jan 11, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication apparatus includes a pulse dial signal generator, a tone dial signal generator, a switching circuit including a self-return switch and a self-non-return switch, for switching the pulse dial generator and the tone dial generator, a plurality of input keys such as a ten-key pad for inputting data, and a dialer circuit for switching at least one of the input keys in synchronism with an operation of the switching circuit.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully