Mine extraction device and method

Details Mine extraction device and method Mine extraction device and method

1991-02-27

1992-03-24

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Miscellaneous

254 93R, 254108, 254133A, B65G 700

Patent

active

050980653

ABSTRACT:
A mining equipment extraction device (1), comprising:

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patent: 4030699 (1977-06-01), Heimke
patent: 4506867 (1985-03-01), LeGlue
patent: 4544135 (1985-10-01), Albaugh

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