Bob Paddock wrote:
The 06/11/2006 entry
"New Form of Electrical Current has many Applications"
at http://www.keelynet.com/ to me looks like a case of patenting
something that has been around for a few decades.
The old technology is known at the "H-Bridge".
How is this SDC [TM] in anyway different than biphasic currents that have
been in use for many decades?
This proves anyone can get a patent for even the most frivilous idea.
The telephone signal in copper wire is DC with superimposed alternating
How long have telephones been around?