...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7727446 | Concrete floor manufacturing station and method of manufacturing a concrete floor A manufactured building system has a pair of pre-stressed multi-stemmed concrete floors. The pre-stressed multi-stemmed concrete floors are adapted to contact each other on one parallel side edge to form peripheral edges and a central joining edge. A part of a build... | 06/01/2010 |