An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 5154118 | Automatic settable date printing apparatus An automatically settable date printing apparatus adapted particularly for use in postage meters which print an indicia on envelopes as they are fed seriatim past a rotary printing drum in the postage meter in which a plurality of print wheels print the d... | 10/13/1992 |
| 4855985 | Digital storage A recording system for representing digital information in the form of marks and the absence of marks at a plurality of locations, each mark being formed in response to energy delivered by an optical beam; the device includes a material configured in a fo... | 08/08/1989 |
| 3973111 | Calculator having thermal printing head Disclosed is an electronic calculator which has a thermal printing head or active printing area exposed to the ambient environment to enable printing in a stamp-like fashion. In the preferred form, the thermal printing head comprises a predetermined numbe... | 08/03/1976 |