Displaying results 301 of 320 - 559
| Date | Innovation | City | State | Country | Society |
|---|---|---|---|---|---|
| 1934 | Pioneer Zephyr | Chicago | IL | USA | ASME |
| 1905 | Pit-Cast Jib Crane | Birmingham | AL | USA | ASME |
| 1935 | Port Washington Power Plant | Milwaukee | WI | USA | ASME |
| 1807 | Portland Observatory | Portland | ME | USA | ASCE |
| 1787 | Portland Head Light | Cape Elizabeth | ME | USA | ASCE |
| 1799 | Potowmack Canal and Locks | Fairfax County | VA | USA | ASCE |
| 1888 | Poughkeepsie-Highland Bridge | Poughkeepsie | NY | USA | ASCE |
| 1891 | Ames Hydroelectric Generating Plant | Ophir | CO | USA | IEEE |
| 1887 | Pratt Institute Power Plant | Brooklyn | NY | USA | ASME |
| 1966 | American Precision Museum | Windsor | VT | USA | ASME |
| 1909 | Queensboro Bridge | Long Island City | NY | USA | ASCE |
| 1904 | Alexanderson Radio Alternator | Schenectady | NY | USA | IEEE |
| 1922 | First Ram-Type Blowout Preventer BOP | Houston | TX | USA | ASME |
| 1943 | Red Hill Underground Fuel Storage Facility | Aie | HI | USA | ASCE |
| 1895 | Reed Gold Mine Ten-Stamp Mill | Midland | NC | USA | SME (mining) |
| 1895 | Reed Gold Mine Ten-Stamp Mill | Midland | NC | USA | ASME |
| 1890–1960 | Refrigeration Research Museum | Brighton | MI | USA | ASME |
| 1889 | Alvord Lake Bridge | San Francisco | CA | USA | ASCE |
| 1917 | Reynolds-Corliss Pumping Engine | Jacksonville | FL | USA | ASME |
| 1902 | Rockville Stone Arch Bridge | Marysville | PA | USA | ASCE |
