Hello
Please go to the US patent office when looking for patent reference information.
The original Bentax patent on its tube has expired. This confirms an entry at 20 years in this country.
The trademark history is available at the US trademark office.
The business presence in North...
Hello
Please do not conclude that corona based ionization is the same as needle point ionzation.
Needle based ionization is mostly about electron emitters and some positive where static must be held in balance or particles must be charged.
Corona based ionzation actually has a chemical...
I recognize that I should not advertise or promote product, however I would like it if you would contact www.bentaxna.com . We are the original importers of this product in the U.S.A.
