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

DATAMP Patents by Date for April 1919
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
11,298,653-D53,161--[datamp][all]
81,299,452----[datamp][all]
151,300,240----[datamp][all]
221,301,159----[datamp][all]
291,301,891RE14,640D53,260--[datamp][all]