SIGMA
USPTO Trademark Record · Serial No. 74221684
Trademark details
It was initially claimed by UNITRON HEARING LTD. on 19911115.
That brand applies to the following goods and services:instruments; namely, a hand-held programmer for setting the parameters of hearing aids, and a kit consisting of computer programs, cables, and an interface operable with a microcomputer for setting the parameters of hearing aids.
Currently that trademark is represented by trademark attorney(s): RICHARD J PARR.
You can learn more about that trademark on the USPTO website: View the USPTO record
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