Patents & inventions
Subtitle: an information aid for inventors
Edition: Revised Aug. 1977
Publisher: Dept. of Commerce, Patent and Trademark Office : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 23
Subjects: Patents -- United States; Inventions -- United States
Other titles: Information aid for inventors
Notes: Stock number given on p. [3] is erroneous

For background information, see General information concerning patents