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Patent applications and USPTO patent grants for Blumberg; Stephen L..The latest application filed is for "method of postal fraud detection for stamps activated at point of sale".
Patent | Date |
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Apparatus and materials for two-stage printing of value indicia Grant 7,970,136 - Blumberg , et al. June 28, 2 | 2011-06-28 |
Two-stage printing of value indicia Grant 7,949,614 - Blumberg , et al. May 24, 2 | 2011-05-24 |
Method Of Postal Fraud Detection For Stamps Activated At Point Of Sale App 20100138321 - Rathbun; Darryl T. ;   et al. | 2010-06-03 |
Apparatus and materials for two-stage printing of value indicia App 20070253550 - Blumberg; Stephen L. ;   et al. | 2007-11-01 |
Two-stage printing of value indicia App 20070255664 - Blumberg; Stephen L. ;   et al. | 2007-11-01 |
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