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Roberto Zafferri
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Neuchatel, CH
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last 30 patents
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Patent Grant
Electromagnetic motor rotatable in either direction
Patent number
4,371,821
Issue date
Feb 1, 1983
Ebauches S.A.
Claude Laesser
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Electromagnetic motor rotatable in either direction
Patent number
4,361,790
Issue date
Nov 30, 1982
Ebauches S.A.
Claude Laesser
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Watch
Patent number
4,271,498
Issue date
Jun 2, 1981
Ebauches S.A.
Roberto Zafferri
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Patent Grant
Electro-acoustic device for alarm watch
Patent number
4,258,432
Issue date
Mar 24, 1981
Ebauches S.A.
Roberto Zafferri
G10 - MUSICAL INSTRUMENTS ACOUSTICS