| Five years and some 5,127 prototypes later, he had developed the world's first bagless vacuum cleaner. |
| We manufactured versions of prototypes which were tested on various golf carts, baby buggies and marine applications with great results. |
| But I assume that these vehicles are prototypes, and that once the operational kinks are worked out, they'll start scaling down a bit. |
| Unlike most New York examples, however, this one recalls contemporary German or Austrian models more than the French prototypes. |
| These were the prototypes for the death camps, and refinement of systematic killing methods for large numbers of people was part of the deal. |
| Some artists are willing and able to create roughs or prototypes to illustrate to a licensee just how well their work would suit products. |
