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(Continued from Page 52) tering into a high quality of plasterboard structure of size, strength, and dura'bility, which can only be accomplished by an intimate knowledge of the nicely balanced relation of each to the other, and the making of such combination effectively and economically at timely successive stages within the time setting period of the plaster material, may display invention of a high order. Have the plantiffs, in their process of ,making pl,asterboard, displayed such invention? The expert examiners of the patent office say they have, and a patent was issued to plantiffs on such examination. The patent itself is prima facie evidence that the patentee was the first inventor. At lease it casts upon him who denies it the burden of sustaining his denial by proof beyond a reasonable doubt."

In view of the fact that many large Eastern concerns were heavily interested in the outcome of this suit, this decision, which decides litigation covering over three years, is of particular interest to California inasmuch as it secures to a local enterprse erclusive rights to manufacture a product of their own invention and the everyday utility of which is coming to be more, and more realized, and is of particular value at this time in unusual building activities. Wall board has become a staple product just as has lumber.

It s understood that a petition for rehearing will be filed by the defendents and an application for hearing in the United States Supreme Court will be made in the case.

A. F. FLINN A BAY DISTRICT VISITOR

A. F. Flinn, manager of the Albion Lumber Co. at A1bion, was a recent visitor to the Bay District. Accompanied by Mrs. Flinn and daughter, they 'made the trip by motor. During their visit, they were registered at the Claremont Hotel, Berkeley.

Henry Blagen A California Visitor

Henry Blagen, of the Grays Harbor Lumber Co., Hoquiam, Washington, is spending a few weeks in California on business. W'hile in San Francisco. he soent several days calling on his many lumbermen friends. - He is now spending a few days at their new pine mill, which the company recently purchased in California.

A. M. CHARTER SPENDS VACATION AT SANTA CRUZ

e. nA. Charter, manager of the Sterling Lumber Co. yard, at Roseville has just completed an enjoyable two weeks vacation at Santa Cruz. In addition to basking in the sunshine on the bea,ch, he also made several side trips into the Santa Cruz mountains. On h,is return north, he checked in at the San Francisco office, to discuss busineiss matters.

Anyone can borrow trouble-without security.

J. R. HALSTEAD VTSITS IN SAN FRANCISCO

J. R. Halstead of P'hoenix, Arizona, accompanied by Mrrs. Halstead, were recent San Francisco visitors where they spent several days taking in the sights of the Bay District. Mr. Halstead is a big retail lumber operator in Arizona, where his concern have 22 retail lumber yards. They also operate the J. D. Halstead Lumber Co. at Fresno. After their San Francisco visit, Mr. and Mrs. Halstead returned to Fresno.