Fastening means for roof mats for mine workings
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United States of America Patent
Stats
-
Feb 17, 1981
Issued Date -
N/A
app pub date -
Sep 11, 1978
filing date -
Oct 26, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Fastening means for mechanically fastening adjacent portions of mat material for application to the undersurface of a roof of a mine working and comprising a plurality of projecting elements for penetrating the mat material and base means connecting and spacing said projecting elements in longitudinal succession.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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