Title:
Stamped helical coil
United States Patent 2568169
US Patent References:
Diaphragm for electrodynamic loud speakers
- - 1971452


Inventors:
Edward, Raczynski Chester
Publication Date:
09/18/1951
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Assignee:
ZENITH RADIO CORP
Primary Class:
336/223
Other Classes:
D11/3, 29/896.900, 336/224, 439/842, 336/225, D30/152, 29/602.100, 29/6.100
International Classes:
H01C3/10; H01C3/00
Foreign References:
GB190804464A