USD202998S - Drag bit - Google Patents

Description

United States Patent Ofifice Des. 202,998 Patented Nov. 23, 1965 DRAG BIT John E. Eckel and Everett H. Lock, Tulsa, Okla., assignors, by mesne assignments, to Esso Products Research Company, a corporation of Delaware Filed Dec. 19, 1963, Ser. No. 77,859

Term of patent 3 /2 years FIGURE 1 is a front elevational view of a drag bit showing our new design; and

FIGURE 2 is a bottom view of the drag bit shown in FIGURE 1.

We claim:

The ornamental design for a drag bit, substantially as shown.

References Cited by the Examiner UNITED STATES PATENTS 2,855,181 10/1958 Olson. 2,884,227 4/1959 Hjalsten.

FIG. 2

OTHER REFERENCES Composite Catalog of Oil Field and Pipeline Equipment, vol. 11, 17th., 1950 edition, page 4207, bit at lower right of page.

CONRAD A. BOUSQUET, Primary Examiner.

ADELINE B. HANNAH, WALLACE R. BURKE,

Examiners.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Design No. 202,998 November 23, 1965 John E. Eckel et al.

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

In the grant, lines 2 and 3, for "R550 Products Research Company, a corporation of Delaware," read Esso Production Research Company, of Houston, Texas, a corporation of Delaware, line 13, for "Esso Products Research Company, its successor: read Esso Production Research Company, its successors in the heading to the drawings and printed specification, lines 4 and 5, for "Esrso Products Research Company, a corporation of Delaware" read Esso Production Research Company, Houston,

Tex. a corporation of Delaware Signed and sealed this 7th day of February 1967. (SEAL) Attest:

ERNEST W. SWIDER EDWARD J. BRENNER- Altesting Officer Commissioner of Patents

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