Last Updated：2025/12/30
Sentence
So
it
also
is
in
regard
to
the
mimeograph,
whose
forerunner,
the
electric
pen,
was
born
of
Edison's
brain
in
1877.
He
had
been
long
impressed
by
the
desirability
of
the
rapid
production
of
copies
of
written
documents,
and,
as
we
have
seen
by
a
previous
chapter,
he
invented
the
electric
pen
for
this
purpose,
only
to
improve
upon
it
later
with
a
more
desirable
device
Quizzes for review
So it also is in regard to the mimeograph, whose forerunner, the electric pen, was born of Edison's brain in 1877. He had been long impressed by the desirability of the rapid production of copies of written documents, and, as we have seen by a previous chapter, he invented the electric pen for this purpose, only to improve upon it later with a more desirable device
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