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PAIRPEARL PRODUCTS v. JOSEPH H. MEYER BROS.

No. 37.

58 F.2d 802 (1932)

PAIRPEARL PRODUCTS, Inc., v. JOSEPH H. MEYER BROS. et al.

District Court, D. Maine, S. D.

May 2, 1932.

Attorney(s) appearing for the Case

Verrill, Hale, Booth & Ives, of Portland, Me., for plaintiff.

Darby & Darby, of New York City, for defendant.

PETERS, District Judge.

This is a suit in equity for infringement of two United States letters patent granted to one Paisseau, No. 1,525,317 on February 3, 1925, application filed August 10, 1921, and No. 1,760,771 on May 27, 1930, application filed February 9, 1925. The answer denies infringement and questions the validity of the patents.

The subject-matter of both patents is the method of treatment of the minute particles of organic matter known as "guanin...

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