Beam counterweight for jack pumps

Details Beam counterweight for jack pumps Beam counterweight for jack pumps

1980-10-14

1982-12-28

Holtje, Nelson C.

Machines not elsewhere specified

Pump or compressor

D1502

Patent

active

D02674041

REFERENCES:
patent: 1986012 (1935-01-01), Patterson
patent: 2074550 (1937-03-01), Humphrey
patent: 3221569 (1965-12-01), Ross
National Supply Co. Bulletin #300-7/41-Weights on Jack Pump on cover.
Composite Cat. of Oil Field & Pipeline Equip., 17th, 1950 Edition-vol. 1, p. 2529-Weights on Jack Pumps at top & bottom.

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