Geometrical instruments – Distance measuring – Sounding type
Patent
1992-09-30
1994-10-04
Will, Thomas B.
Geometrical instruments
Distance measuring
Sounding type
441 6, G01B 300
Patent
active
053514149
ABSTRACT:
A device suitable to accurately determine water depth. The device comprises a rod having a weighted first end, a fixed float and a movable float.
REFERENCES:
patent: 1194846 (1916-08-01), King
patent: 1658536 (1928-02-01), Philen
patent: 2819476 (1958-01-01), Dodge
patent: 2829437 (1958-04-01), Croft et al.
patent: 3084354 (1963-04-01), Lunenschloss
patent: 3381534 (1968-05-01), Ball
patent: 3605147 (1971-09-01), Shelton
patent: 3760441 (1973-09-01), Handelman
patent: 4077076 (1978-03-01), Masters
Troffkin Howard
Will Thomas B.
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