. The Scientific American reference book; a compendium of useful information for inventors and mechanics, containing the complete patent laws of the United States ... forms for patents, caveats, assignments, licenses, and shop rights ... etc., etc . , but shall take no other. If thereare more than tvv^o parties, the times for taking testi-mony shall -be so arranged, if practicable, that eachshall have a like opportunity in his turn, each beingheld to go forward and prove his case against thosewho filed their applications before him. If either party wishes the time for taking his testi-mony, or
. The Scientific American reference book; a compendium of useful information for inventors and mechanics, containing the complete patent laws of the United States ... forms for patents, caveats, assignments, licenses, and shop rights ... etc., etc . , but shall take no other. If thereare more than tvv^o parties, the times for taking testi-mony shall -be so arranged, if practicable, that eachshall have a like opportunity in his turn, each beingheld to go forward and prove his case against thosewho filed their applications before him. If either party wishes the time for taking his testi-mony, or for the hearing, postponed, he must make appli-cation for such postponement, and must show sufficientreason for it by affidavit filed before the time previous-ly appointed has elapsed, if practicable ; and must alsofurnish his opponent with copies of his affidavits, andwith reasonable notice of the time of hearing hisapplication. [Note. —The management of interferences is one ofthe most important duties in connection with Patent-Office business. Our terms for attention to interfer-ences are moderate, and dependent upon the time re-quired. Address all letters to MuNN & Co., No. 37Park Row, New-York.] IXFORMATIOI^ CONCERNING PATENTS. 47. A REISSUE is granted totlie original patentee, hislegal representatives, orthe assignees of tlie entireinterest, when by reason ofa defective or insufficientspecification the original patent is inoperative or in-valid, provided the error has arisen from inadvertence,accident, or mistake, and without any fraudulent ordeceptive intention; but although the patent hasbeen assigned, the application must be made, and thespecification sworn to, by the inventor. The petition for a reissue must show that all partiesowning any undivided interest in the patent concur inthe surrender. A statement, under oath, of the title ofthe party proposing to surrender must be filed Avith theapplication. The general rule is, that whatever is really embracedin the orig
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