Hi: There are 3 "Pickering Patents": http://www.prc68.com/I/MTE.shtml#DCVR 4217651 <http://www.google.com/patents/about?id=wNouAAAAEBAJ> Electrical Measurements, John R. Pickering, Aug 12, 1980, - using a computer to characterize the uncertainty of a voltmeter 5369245 <http://www.google.com/patents/about?id=uY8gAAAAEBAJ> Method and apparatus for conditioning an electronic component having a Characteristic Subject to Variation with Temperature, John R. Pickering, Nov 29, 1994, 219/209; 257/467; 323/907; 324/224; 327/513; 327/538; 438/466; 438/795 - sort of like annealing metal 6342780 <http://www.google.co.uk/patents/about?id=Ec8KAAAAEBAJ> Zener diode reference voltage standards, John Robert Pickering, 29 Jan 2002, 23/313; 323/901 - pulsing used to control temperature -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.End2PartyGovernment.com/

Brooke Clarke <brooke@pacific.net> writes: > Hi: > > There are 3 "Pickering Patents": > http://www.prc68.com/I/MTE.shtml#DCVR > 4217651 <http://www.google.com/patents/about?id=wNouAAAAEBAJ> > Electrical Measurements, John R. Pickering, Aug 12, 1980, - using a > computer to characterize the uncertainty of a voltmeter > 5369245 <http://www.google.com/patents/about?id=uY8gAAAAEBAJ> Method > and apparatus for conditioning an electronic component having a > Characteristic Subject to Variation with Temperature, John > R. Pickering, Nov 29, 1994, 219/209; 257/467; 323/907; 324/224; Aha the "degaussing" technique - thanks I was looking for that one. Perhaps it is *this* one that is used in the newer references, rather than the one below. > 327/513; 327/538; 438/466; 438/795 - sort of like annealing metal > 6342780 <http://www.google.co.uk/patents/about?id=Ec8KAAAAEBAJ> Zener > diode reference voltage standards, John Robert Pickering, 29 Jan 2002, > 23/313; 323/901 - pulsing used to control temperature -- John Devereux