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GB467890A
|
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Improvements in or relating to methods of vibrating objects electromagnetically and vibrating apparatus therefor
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GB467813A
|
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Improvements in or relating to methods of vibrating objects electromagnetically and vibrator apparatus therefor
|
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US2180189A
|
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Vibrator
|
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US1819008A
|
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Method of and apparatus for operating electric motors
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US1819140A
|
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Reciprocating motor
|
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GB315191A
|
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Improvements in or relating to electromagnetic reciprocating motors
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US1705079A
|
|
Reciprocating motor
|
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GB265119A
|
|
Improvements in or relating to electric hammers
|
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GB249828A
|
|
Improvements in or relating to electric hammers
|
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US1680311A
|
|
Reciprocating motor
|
|
US1704849A
|
|
Portable tool and conductor
|
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US1817403A
|
|
Method of and means for controlling vibratory motors
|
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GB237231A
|
|
Improvements in method of and means for controlling reciprocating motors
|
|
US1753454A
|
|
Electric percussive tool
|
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US1708384A
|
|
Electrical control system
|
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US1716114A
|
|
Rotating drill chuck for percussive tools
|
|
US1724650A
|
|
Synchronous-motor-control system
|
|
US1772650A
|
|
System for controlling reciprocating motors
|
|
US1678278A
|
|
Reciprocating electric motor
|
|
US1651306A
|
|
Reciprocating electric motor
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