US3678307A
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Electromechanical oscillator with isochronous compensation and/or frequency regulation
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US3591814A
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Compound reed oscillator or filter
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US3519856A
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Electromechanical oscillators
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US3148497A
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Synchronised magnetic escapement
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DE809420C
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Magnetic lever escapement
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GB660581A
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Improvements in or relating to escapement mechanism
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GB644000A
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Improvements in or relating to escapement mechanism
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GB596216A
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Improvements in or relating to escapement mechanism
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CA586563A
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Electrically-maintained vibratory oscillator
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CA549812A
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Frequency regulating means for oscillating elements
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CA477160A
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Magnetic escapement, counting and like mechanism
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CA476965A
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Escapement mechanism
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CA891104A
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Electromechanical oscillator or filter apparatus
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CA643883A
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Electro-mechanical devices
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CA904958A
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Electromechanical oscillator with isochronous compensation and/or frequency regulation
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CA886103A
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Electromechanical oscillator with rotary output
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CA510844A
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Synchronous motor with polarized rotor
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CA864199A
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Tuning fork arrangement for electromechanical oscillators
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CA891105A
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Compound reed oscillator
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CA543159A
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Mechanical oscillators
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