1811

William Hall born.

1833

William Hall marries Elizabeth Lothrop, the sister of George B. Lothrop.

January 10: Enoch Robinson & Willam Hall: “Latch of Door and Other Locks.”

US Patent No. 1995

September 11: Enoch Robinson & Willam Hall: “Window-Fastening.”

US Patent No. 2248

1843

William Hall leaves E. Robinson & Co.; founds Wm. Hall & Co., 27 Dock Square, Boston, Mass.

August 17: Willam Hall: “Lock for Safes, Bank-Vaults, &c.”

US Patent No. 3221

October 18: Willam Hall: “Door Lock or Latch.”

US Patent No. 3308

October 16: Willam Hall: “Lock for Banks and Safes.”

US Patent No. 4236

1847

MCMA Exhibition at Faneuil and Quincy Halls, Boston. Among the exhibitors are Enoch Robinson, William Hall, and George B. Lothrop.

William Hall: “Powder-Proof Lock.”

US Patent No. 5686

January 6: Willam Hall: “Improvement in Locks.”

US Patent No. 37,290

May 23: Willam Hall: “Improvement in Locks.”

US Patent No. 47,817

May 18: Willam Hall: “Improvement in Permutation-Locks.”

US Patent No. 90,096

October 19: Willam Hall: “Improved Rose for Door Knobs.”

US Patent No. 95899

August 19: Willam Hall: “Improvement for Bolts in Safe-Doors, &c.”

US Patent No. 141,874

1874

Bank-Lock.