Here is a list of Hollar patents. I think this concludes what I have on Hollar (so far).
290,052 Burglar Proof Safe, William Henry Hollar (5/28/1883, 12/11/1883)
459,226 Safe or Vault, William H Hollar (4/23/1891, 9/8/1891)
477,897 Electric Lock, William H. Hollar and Frederick S. Holmes (⅔/1890, 6/28/1892), assigned to James W. Torrey of Merchantville, New Jersey
477,898 Electric Lock, William H. Hollar and Frederick S. Holmes (⅔/1890, 6/28/1892), assigned to James W. Torrey of Merchantville, New Jersey
518,453 Safe Lock (adjustable bolt seating), William H. Hollar (4/18/1892, 4/17/1894)
533,298 Bolt Mechanism for Safes (rectangular doors), William H. Hollar (2/23/1894, 1/29/1895)
533,299 Bearing for Safe Bolt Work, William H. Hollar (10/20/1894, 1/29/1895)
545,020 Electrically Controlled Winding Mechanism for Time Locks, William H. Hollar and George L. Weaver and Anthony Kennedy (4/1/1895, 8/20/1895)
545,021 Electric Winder for Time Locks, William H. Hollar and George L. Weaver and Anthony Kennedy (4/17/1895, 8/20/1895)
571,319 Stop Mechanism for Time Locks, William H. Hollar and Harry W. Pidgeon (12/27/1895, 11/10/1896)
591,188 Safe, William H. Hollar and Anthony Kennedy (2/15/1897, 10/5/1897)
621,340 Burglar Proof Safe, William H. Hollar (8/11/1898, 3/21/1899)
621,341 Safe Boltwork (round door), William H. Hollar and Anthony Kennedy (6/11/1898, 3/21/1899)
650,842 Electrically Controlled Winding Mechanism for Time Locks, William Henry Hollar and Alonzo L. Rhodes (3/10/1899, 6/5/1900)
659,445 Time Lock, William H. Hollar and Anthony Kennedy and Alonzo L. Rhodes (7/28/1899, 10/9/1900)
662,789 Interlocking Device for Safe Doors, William H. Hollar and W. Corry (5/31/1900, 11/27/1900)
686,073 Electrically Controlled Combination Lock, William Henry Hollar and Alonzo L. Rhodes (3/20/1901, 11/5/1901)
713,883 Safe, William Henry Hollar (2/4/1902, 11/18/1902)
737,840 Electric Lock, William H. Hollar (3/10/1902, 9/1/1903)
789,217 Bolt Frame for Safes or Vaults (12/5/1900, 5/9/1905)
841,398 Vault (ventilation), William H. Hollar (10/13/1906, 1/15/1907)
977,307 Vault, William H. Hollar and Walter Rees and Harry F. Balou (3/3/1909, 11/29/1910)
1,007,568 Vault (heating/cooling the door to effect a seal), William H. Hollar (3/3/1911, 10/31/1911)
1,051,588 Electrically Controlled Lock, William H. Hollar and Harry F. Balou (6/3/1909, 1/28/1913)
1,053,815 Vault, William H. Hollar (10/31/1912, 2/18/1913)
1,238,073 Automobile Fuel Tank, William H. Hollar, deceased (6/12/1914, 8/21/1917)
1,309,200 Vault (reinforcing walls using railroad rails), William H. Hollar (8/2/1916, ⅞/1919)
1,425,324 Safe or Vault Wall, Anthony Kennedy (11/15/1918, 8/8/1922), assigned to the Hollar Company
1,489,946 Vault, Anthony Kennedy (⅗/1921, 4/8/1924), assigned one-half to the Hollar Company
1,605,444 Vault, Anthony Kennedy (11/8/1923, 11/2/1926), assigned one-half to the Hollar Company
1,633,369 Envelope (tamper evident), William H. Hollar Jr. (6/12/1926, 6/21/1927)
1,682,755 Key Envelope, William H. Hollar Jr., Walter G. Uhlman (8/3/1926, 9/4/1928)
2,059,919 Electric Combination Lock, Edmund E. Teubner (1/24/1936, 11/3/1936), assigned to The Hollar Company