4 ms·
The last modified date on http://phil.ipal.org/tc217.gif http://phil.ipal.org/tc217.gif is 12 Dec 1999, which was 3 years before the last patent expired.
by kyrias 13y ago
The last modified date on http://phil.ipal.org/tc217.gif http://phil.ipal.org/tc217.gif is 12 Dec 1999, which was 3 years before the last patent expired.