The Director may require the applicant to furnish a model of convenient size to exhibit advantageously the several parts of his invention. When the invention relates to a composition of matter, the Director may require the applicant to furnish specimens or ingredients for the purpose of inspection or experiment. (July 19, 1952, ch. 950, 66 Stat. 799 ; Pub. L. 106–113, div. B, § 1000(a)(9) [title IV, § 4732(a)(10)(A)] , Nov. 29, 1999 , 113 Stat. 1536 , 1501A–582; Pub. L. 107–273, div. C, title III, § 13206(b)(1)(B) , Nov. 2, 2002 , 116 Stat. 1906 .) Historical and Revision Notes Based on Title 35, U.S.C., 1946 ed., § 34, part (R.S. 4890 and 4891). The change in language in the second paragraph broadens the requirement for specimens. Editorial Notes Amendments 2002— Pub. L. 107–273 made technical correction to directory language of Pub. L. 106–113 . See 1999 Amendment note below. 1999— Pub. L. 106–113 , as amended by Pub. L. 107–273 , substituted “Director” for “Commissioner” in two places. Statutory Notes and Related Subsidiaries Effective Date of 1999 Amendment Amendment by Pub. L. 106–113 effective 4 months after Nov. 29, 1999 , see section 1000(a)(9) [title IV, § 4731] of Pub. L. 106–113 , set out as a note under section 1 of this title .