Stethoscope head

Details Stethoscope head Stethoscope head

1982-05-12

1985-03-05

Kemper, Catherine E.

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Orthopedic or chiropractic

Patent

active

D02778904

REFERENCES:
patent: D205171 (1966-06-01), Littmann
patent: D213257 (1969-01-01), Littmann
patent: D214002 (1969-04-01), Machlup et al.
patent: D256951 (1980-09-01), Allen
patent: 3108652 (1960-06-01), Littman
patent: 3303903 (1967-02-01), Speelman
patent: 3339667 (1967-09-01), Speelman
patent: 3470975 (1969-10-01), Haiken
patent: 3472335 (1969-10-01), Allen
patent: 3570625 (1971-03-01), Allen

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