Dominion of Canada patent : Thomas Lucien Richard.
- SCA207-GA356-1-25
- File
- 1913
Part of Electrohome fonds.
One Dominion of Canada patent for Thomas Lucien Richard for A new and useful improvement in sound amplifiers.
Electrohome
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Dominion of Canada patent : Thomas Lucien Richard.
Part of Electrohome fonds.
One Dominion of Canada patent for Thomas Lucien Richard for A new and useful improvement in sound amplifiers.
Electrohome
Patent for brake for talking-machines.
Part of Electrohome fonds.
A published patent notice for A break for talking-machines held by Gunther Philip Wild of Pennsylvania.
Electrohome
Part of Electrohome fonds.
Electrohome