Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 5513102 | Data processing methods of implementing an award to an authorized user of a credit card Data processing methods for enhancing the value of a substantially conventional credit card so as to enhance a user's perception of the desireability of holding and using the card and encourage increased use of the card for its normal utility as a payment... | 04/30/1996 |
