Mark Twain not the best judge of inventions
Nevada Senator John P. Jones told Clemens that every smart investor was backing the Mergenthaler. Henry Huttleston Rogers (once of Standard Oil) helped Clemens out of the mess.
One website contains some interesting commentary:
"The [Paige patent] application was filed in 1887 and was pending eight years, mainly owing to the work of examination by the Patent Office. One of the examiners died while the case was pending, another died insane, while the patent attorney who originally prepared the case also died in an insane asylum."
The website also states: The Paige patent is perhaps, as far as size is concerned, the most voluminous ever taken out in the history of invention.
That writer perhaps has not seen some of the recent patents, with 5,000 claims!