Inventor · disambiguated record
Helmut Ryback
Also filed as: RYBACK HELMUT
2 granted patents·43 citations·filing 1985–1986
61Inventor score
Files withAKG AKUSTISCHE KINO GERAETE2
Top patents by PatentIndex Score
2 records- 0156US4756308AProtective breathing mask having a speaking diaphragm for close communication and an electroacoustic transducer system for indirect speech transmission from inside the maskAKG AKUSTISCHE KINO GERAETE·Filed 1985·Granted Jul 12, 1988·38 cites·1 claims
- 0227US4771476ASound chamber closure for an electroacoustic transducerAKG AKUSTISCHE KINO GERAETE·Filed 1986·Granted Sep 13, 1988·5 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →