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

DATAMP Patents by Date for February 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
31,329,456----[datamp][all]
101,330,053-D54,394--[datamp][all]
171,330,949----[datamp][all]
241,331,793-D54,516--[datamp][all]