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

DATAMP Patents by Date for April 1861
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
231,877----[datamp][all]
931,987----[datamp][all]
1632,041RE1,173---[datamp][all]
2332,120----[datamp][all]
3032,179----[datamp][all]