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Title:
Echo ranging and listening gear
United States Patent 2460316
Inventors:
Trent, Horace M.
Jones, Thomas F.
Publication Date:
02/01/1949
Export Citation:
Click for automatic bibliography generation
Assignee:
Trent, Horace M.
Jones, Thomas F.
Primary Class:
367/107
Other Classes:
340/566, 367/137, 367/901
View Patent Images:
Download PDF 2460316
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US Patent References:
2329570
Device for regulating the sensitivity of signal receiving apparatus
2284850
Speed indicating apparatus
2235385
Welding method and apparatus
2131993
Sonic depth and height indicator
2108090
Apparatus for distance and depth measurement
2103090
Means for and method of generating electrical currents
2032893
Arrangement for the direct indication of time periods, especially for echo sounding
2009459
Distance and depth finding
1709573
Method of and apparatus for measuring distance
Foreign References:
AU118392B
GB180646A