Home › Escom › Albert L. Donaldson

Albert L. Donaldson

ESEscom: 2 patents #1 of 8Top 15%

Oakton, VA: #94 of 250 inventorsTop 40%

Virginia: #12,642 of 34,511 inventorsTop 40%

Overall (All Time): #2,159,734 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7249175	Method and system for blocking e-mail having a nonexistent sender address	—	2007-07-24
6321267	Method and apparatus for filtering junk email	—	2001-11-20