Application Serial Number (APN)
This field contains the identification number assigned by the US Patent and Trademark Office to applications which have received a filing date.
TIP: Including commas is optional. Number must be entered as a six digit string with leading zeros, if needed. Series code is not included in this field, so more than one document may be retrieved based on a single serial number.
Example: Searching 000001 will retrieve multiple documents, each having been assigned serial number 1 within different series codes. Series codes are not searchable in this database, but correspond to the following time spans:
Series Codes:
2 Earlier than Jan. 1, 1948
3 Jan.1, 1948 - Dec. 31, 1959
4 Jan. 1, 1960 - Dec. 31, 1969
5 Jan. 1, 1970 - Dec. 31, 1978
6 Jan. 1, 1979 - Dec. 31, 1986
7 Jan. 1, 1987 - Dec. 31, 1992
8 Jan. 1, 1993 - Dec. 31, 1997
9 Jan. 1, 1998 - Dec. 2001
10 Dec. 2001 - Dec. 2004
11 Dec. 2004 -- present
29 Design applications (January 1993 on)
更多内容参见：http://www.uspto.gov/patft/help/helpflds.htm |
