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Check writing machine
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Patent number 5,806,998
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Issue date Sep 15, 1998
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Paymaster Technologies, Inc.
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Robert P. Koper
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Check writing machine
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Patent number 5,743,181
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Issue date Apr 28, 1998
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Paymastet Technologies, Inc.
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Robert P. Koper
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G06 - COMPUTING CALCULATING COUNTING
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Check writing machine
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Patent number 5,611,273
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Issue date Mar 18, 1997
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The Paymaster Corporation
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Robert P. Koper
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G06 - COMPUTING CALCULATING COUNTING
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Money order imprinter
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Patent number 5,292,283
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Issue date Mar 8, 1994
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The Paymaster Corporation
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Robert P. Koper
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Money order imprinter
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Patent number 4,995,315
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Issue date Feb 26, 1991
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The Paymaster Corporation
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Robert P. Koper
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS