Home | FAQ Search: Advanced | Person | Company | Type | Class Login
Quick search:
Patent number:
Patent Date:

DATAMP Patents by Date for April 1917
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
31,221,193-D50,556--[datamp][all]
101,221,844----[datamp][all]
171,223,012----[datamp][all]
241,223,513----[datamp][all]