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2. Lock and Dam No. 19 - Wikipedia

   en.wikipedia.org/wiki/Lock_and_Dam_No._19

   Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 1978, the Keokuk Lock and Dam was listed in the National Register of Historic Places , #78001234. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering 1,605 acres ...

3. USS Grayback (SSG-574) - Wikipedia

   en.wikipedia.org/wiki/USS_Grayback_(SSG-574)

   She was launched on 2 July 1957, sponsored by Mrs. John A. Moore, widow of the last commanding officer of the previous USS Grayback (SS-208), and commissioned at Mare Island on 7 March 1958. Grayback was initially designated as an attack submarine , but was converted in 1958 into a guided-missile submarine (SSG-574) armed with the Regulus ...

4. Lewis Urry - Wikipedia

   en.wikipedia.org/wiki/Lewis_Urry

   On October 9, 1957, Lewis Urry, Karl Kordesch, and P.A. Marsal filed US patent (2,960,558) for this revolutionary alkaline dry cell battery with a powdered zinc gel anode. It was granted on November 15, 1960, and assigned to Union Carbide Corporation.

5. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   There were two ⌀3.2 mm negative pins spaced 9.5 mm apart and two ⌀4.0 mm positive pins spaced 14.3 mm apart. Negative and positive pins were spaced 18.1 mm apart. It was used in some early transistor radio amplifiers with a Class B output stage, allowing the loud speaker to be connected between the amplifier output and the battery center tap.

6. VA-196 (U.S. Navy) - Wikipedia

   en.wikipedia.org/wiki/VA-196_(U.S._Navy)

   Attack Squadron 196 (VA-196) was an aviation unit of the United States Navy.It was established as Fighter Squadron 153 (VF-153) on 15 July 1948, redesignated as VF-194 on 15 February 1950, and finally redesignated VA-196 on 4 May 1955.

7. DKW 3=6 - Wikipedia

   en.wikipedia.org/wiki/DKW_3=6

   The 3=6 descended directly from the prewar DKW F9 prototype. By 1955, the DKW 3=6 grew in width and track by almost 4 inches and was advertised as "der Große DKW", the "large DKW". The DKW 3=6 is a compact front-wheel drive saloon manufactured by Auto Union GmbH. [2] The car was launched at the Frankfurt Motor Show in March 1953 and sold until ...

8. Exercise Strikeback - Wikipedia

   en.wikipedia.org/wiki/Exercise_Strikeback

   Operation Strikeback itself began on 19 September 1957, involving over 200 warships, 650 aircraft, and 65,000 personnel. To provide a more realistic simulation of protecting transatlantic shipping, over 200 merchant marine vessels, including the ocean liners Queen Mary and Ile de France , also participated as duly-flagged target ships for the ...

9. M197 electric cannon - Wikipedia

   en.wikipedia.org/wiki/M197_electric_cannon

   The M197 went into service on later marks of the AH-1 Cobra, using either the M97 or A/A49E-7 armament subsystems, and was also fitted in a ventral turret on the U.S. Marine Corps YOV-10D Bronco NOGS. It is also the basis of the GPU-2/A gun pod, which incorporates the cannon, a battery and electric drive motor, and 300 rounds of linkless ...