v3092-1242

34

to

^ find below a comrr

rge of litis applicat

the EXAMIER

Philip Subkow

435 Roosevelt Building

Los Angeles 14, California

n,-..-.;. 33 - Room 5087

ji: James Moon

--.Ml 35,666

June 28, 1948

DERRICK MOUNTING FOR

PORTABLE DRILLING AND SERVICING

RIGS

This application has been examined.

Reference made of record:

""/McEwen et al .

References of interest:

ti Dow

4 Woody

''Flelschmann

1 Ponley et al.

2,175,381

2,204,716

2,471,735

2,251,013

OoU 12, 1943

Oct. 10, 1939

June 18, 1940

May 31, 1949

July 29, 1941

189-14

189-11

254-86

255-19.1

Claims 1-5 are rejected as failing to patentably

differ from the patent to KeEwen et al. Applicant has

merely taken McEwen's derrick structure and reversed the

position, enclosing McEwen's standards (7) in the cab of

the truck and causing the derrick to be raised forward of

the truck rather than to the rear of the truok. Appli-

cant's change of position is a matter of mechanical ex-

pedience and is not considered to involve Invention.

---

archive.org Volume Name: govuscourtsca9briefs3092

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Document Link: http://archive.org/stream/govuscourtsca9briefs3092#page/n1241/mode/1up

Top Keywords (auto-generated):

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Top Key Phrases (auto-generated):

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