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US 2009/0288321 A1Published application
Device that attaches to a card that displays a number
OwnerBenjamin Firestoneinventor
Life of this patent
Estimating the term…
Abstract
A device that attaches to a card, such as a credit card, that displays a number. Typically, a user of the device sets the number.
Claims20
A device that attaches to a card comprising in combination:
- an attachment part and a number display.
Dependencies are inferred from the claim text.