Selective interference filter

Details Selective interference filter Selective interference filter

1977-10-25

1979-07-24

Kamm, William E.

Surgery

Truss

Pad

128901, A61B 504

Patent

active

041619455

ABSTRACT:
Filtering means for biophysical recording apparatus for removing interference from a signal source which includes a band rejection or notch filter and means for inserting the filter into the signal circuit when the signals have a certain characteristic and for removing the filter when the signals have another characteristic.

REFERENCES:
patent: 3375451 (1968-03-01), Borelli et al.
patent: 3453486 (1969-07-01), Weber
patent: 3534282 (1970-10-01), Day
patent: 3767939 (1973-10-01), Chamran et al.
patent: 3811428 (1974-05-01), VAN Horn et al.

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