Stethoscope headset

Details Stethoscope headset Stethoscope headset

1994-04-21

1995-09-05

Zarfas, Louis S.

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Hand manipulated tool or instrument

Patent

active

D03620638

REFERENCES:
patent: D246782 (1977-12-01), Saiya
patent: D335709 (1993-05-01), Choi
patent: D353195 (1994-12-01), Savage et al.
patent: 2498960 (1950-02-01), Mullin
patent: 3108652 (1963-10-01), Littmann
patent: 3168160 (1965-02-01), Littmann et al.
patent: 3539032 (1970-11-01), Scanlon

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