RC

Ralph T. Campagna

Overall (All Time): #607,591 of 4,157,543Top 15%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
12425785 Personal communication device Victoria C. Newton 2025-09-23
12120488 Personal sound amplification article and method for implementing same Victoria C. Newton 2024-10-15
11350225 Personal sound amplification article and method for implementing same Victoria C. Newton 2022-05-31
10045133 Variable sound attenuator with hearing aid Natan Bauman 2018-08-07
9521480 Variable noise attenuator with adjustable attenuation Natan Bauman 2016-12-13
9333116 Variable sound attenuator Natan Bauman 2016-05-10
7720245 Hearing aid system Natan Bauman, Oleg Shikhman 2010-05-18
7421086 Hearing aid system Natan Bauman, Oleg Shikhman 2008-09-02