Pipelayer

Machines not elsewhere specified – Agricultural or construction machinery – Self-propelled

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D1504

Patent

active

D02630516

REFERENCES:
patent: D230300 (1974-02-01), Oestmann et al.
patent: 4042116 (1977-08-01), Bertolino
patent: 4083459 (1978-04-01), Allen
Construction Methods & Equipment, 3/77, p. 38, Pipelayer, center of page.
Caterpillar-Built Pipelayers, no date provided, Pipelayer on front cover.
Caterpillar D10 Brochure AECQ9072-01, no date provided, D-10 Track-Type Tractor, inside rear cover.

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