H - Electricity – 04 – R
Patent
H - Electricity
04
R
181/22, 349/26
H04R 25/00 (2006.01) G02C 11/06 (2006.01) H04R 1/38 (2006.01)
Patent
CA 979816
Carlson Elmer V.
Knowles Hugh S.
LandOfFree
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