Boots – shoes – and leggings
Patent
1980-07-07
1982-06-22
Krass, Errol A.
Boots, shoes, and leggings
73291, G06F 1542
Patent
active
043365914
ABSTRACT:
A depth monitoring device monitors the period of a diver's maximum depth. A aximum depth display is coupled to the depth monitor to enable the diver to quickly determine, at any given time during the period, his maximum depth of submergence. When the diver reaches a preselected critical maximum depth, an audio alarm coupled to the depth monitor is activated to alert the diver.
REFERENCES:
patent: 3992948 (1976-11-01), D'Antonio et al.
patent: 4005282 (1977-01-01), Jennings
patent: 4054783 (1977-10-01), Seireg et al.
patent: 4109140 (1978-08-01), Etra
patent: 4188825 (1980-02-01), Farrar
patent: 4192001 (1980-03-01), Villa
Acks Robert S.
Berdzar Peter F.
Beers R. F.
Johnston Ervin F.
Krass Errol A.
Skarsten James O.
The United States of America as represented by the Secretary of
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