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| Number | Title | Issue Date |
| 7004386 | Cash drawer A cash drawer comprises a casing, a drawer with a lock head and a connecting rod, a shift plate, a locking device, an opening device, a guiding device and a transmitting device, wherein the drawer is closed by being pushed rearward and opened by turning the lock hea... | 02/28/2006 |
| 4004280 | Calculator data storage system Disclosed is an expandable calculator system of the type implemented on semiconductor chips providing additional data storage registers for increasing data storage capacity of the basic system. A basic calculator system comprising two semiconductor chips ... | 01/18/1977 |
