In reference to the patent: US6570389
This patent claims a method of vacuum testing of power supplies, and it was filed in June 2001.
I am wondering whether this is a standard procedure in the industry. Is there any prior art available?
3
In reference to the patent: US6570389
This patent claims a method of vacuum testing of power supplies, and it was filed in June 2001.
I am wondering whether this is a standard procedure in the industry. Is there any prior art available?
prior-art-request validity us6570389 or ask your own question. 
