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Primary view of Alarm.
Hobbs, Francis Marion
May 29, 1906
Primary view of Bell-Ringer.
Baker, John L.
March 1, 1892
Primary view of Combined Door-Bell and Mail-Receiver.
Key, Joseph H.; Brevard, Horace & Purifoy, William R.
September 22, 1896
Primary view of Clock.
Buttigieg, John
April 11, 1916
Primary view of Improvement in Devices For Ringing Bells.
Perry, Elton
September 18, 1877
Primary view of Device for Ringing Bells.
Perry, Elton
February 25, 1879
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