Diving snorkel with convoluted tube

Details Diving snorkel with convoluted tube Diving snorkel with convoluted tube

1974-12-11

1976-11-23

Kamm, William E.

Surgery

Truss

Pad

138121, A62B 712

Patent

active

039930602

ABSTRACT:
A diving snorkel has a flexible, tubular section having a substantially smooth inner surface to permit laminar air flow therethrough.

REFERENCES:
patent: 1901219 (1933-03-01), Belcher
patent: 2189207 (1940-02-01), Heath
patent: 3043612 (1962-07-01), Pavlik et al.
patent: 3047026 (1962-07-01), Kahn
patent: 3345984 (1967-10-01), Katehis
patent: 3603306 (1971-09-01), Bonin, Jr.
patent: 3858615 (1975-01-01), Weigl

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