Measuring and testing – Liquid level or depth gauge – With other measuring device
Patent
1978-12-14
1980-02-19
Goldberg, Gerald
Measuring and testing
Liquid level or depth gauge
With other measuring device
58145R, 73432R, 364418, G06G 760, G04B 4706
Patent
active
041888251
ABSTRACT:
The monitor has means for automatically initiating a counter which displays accumulated bottom time and surface interval and means for preventing resetting until a safe surface interval has elapsed.
REFERENCES:
patent: 3475902 (1969-11-01), Wessel
patent: 3505808 (1970-04-01), Eschle
patent: 3696610 (1972-10-01), Charbonnier
patent: 4054783 (1977-10-01), Seireg et al.
patent: 4109140 (1978-08-01), Etra
Goldberg Gerald
Roskos Joseph W.
Zallen Joseph
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