Flapper valve blade for a concrete pump or the like

Details Flapper valve blade for a concrete pump or the like Flapper valve blade for a concrete pump or the like

1977-05-20

1979-07-31

Largen, James R.

Machines not elsewhere specified

Pump or compressor

D23 19, D1502

Patent

active

D02525151

REFERENCES:
patent: RE26820 (1970-03-01), Bennett
patent: D202835 (1966-11-01), Bennett
patent: D202836 (1966-11-01), Bennett
patent: D218518 (1970-08-01), Oden
patent: D219778 (1971-01-01), Leeming
patent: 3194271 (1965-07-01), Viessmann
patent: 3295554 (1967-01-01), Huppert
patent: 3545893 (1970-12-01), Schlecht
patent: 3829254 (1974-08-01), Stetter et al.

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