APA (7th ed.) Citation

(1993). Method and apparatus for filtering visual documents inventor, Mark E. Rorvig and Robert O. Shelton. [microform].

Chicago Style (17th ed.) Citation

Method and Apparatus for Filtering Visual Documents Inventor, Mark E. Rorvig and Robert O. Shelton. [microform]. 1993.

MLA (9th ed.) Citation

Method and Apparatus for Filtering Visual Documents Inventor, Mark E. Rorvig and Robert O. Shelton. [microform]. 1993.

Warning: These citations may not always be 100% accurate.