Antique equivalents
Stuart M Kaback (smkabac@erenj.com)
Wed, 7 Jul 1999 16:42:43 -0400
With respect to antique patent equivalents, there is another string to the
bow, but it's rather frayed. Zentralblatt (does anyone else other than a
superannuated person remember CZ) used to publish listings of very old
equivalents, but they were VERY difficult to use (it has been many years
since I last tried, but if I remember correctly you could look things up
only in one direction). Of course not many people have hard copies of CZ
around any more.....ours long since bit the dust.
And one other fragment of information. There are SOME ancient equivalents
in the EDOC database. Not completely, not systematically, but there are
some...I have seen them in the past. That is an EPO file on Questel.Orbit,
for those not familiar with it.
Neither possibility has a high likelihood of success, but the probability
is greater than zero.
Stu Kaback