"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 6370706 | Portable sanitation unit A portable sanitation unit includes a base, a sanitation unit housing having a door and provided with a floor and a sanitation unit pan. A waste tank is situated on the base. Apart from the waste tank, a flushing water tank is also fitted below the waste ... | 04/16/2002 |