by the United States government

“ The applicant shall furnish a drawing where necessary for the understanding of the subject matter sought to be patented. When the nature of such subject matter admits of illustration by a drawing and the applicant has not furnished such a drawing, the Director may require its submission within a time period of not less than two months from the sending of a notice thereof. ”

“ L. 94-131 substituted provisions respecting drawings requiring necessary-for-understanding drawings and submission of drawings within prescribed time period and limiting use of drawings submitted after filing date of application for prior provision requiring the applicant to furnish a drawing when the nature of the case admitted it. ”

“ Pub. L. 106-113, div. B, Sec. 1000 (a) (9) [title IV, Sec. 4732 (a) (10) (A) ] , Nov. 29, 1999, 113 Stat. 1536, 1501A-582; Pub. L. 107-273, div. C, title III, Sec. 13206 (b) (1) (B) , Nov. 2, 2002, 116 Stat. 1906.)
Historical and Revision Notes Based on Title 35, U.S.C., 1946 ed., Sec. 34, part (R.S. 4889, amended Mar. 3, 1915, ch. 94, Sec. 2, 38 Stat. 958) .
The requirement for signature in the corresponding section of existing statute is omitted; regulations of the Patent Office can take care of any substitute. ”