1825

Securing Lightning Rods to Houses

1825

Manufacturing Glass Knobs for Doors, Drawers, etc

1831

Improvement in Making Glass Knobs

1836

Enoch Robinson & Francis Draper

Ferrule Knob for Doors, &c.

1836

Enoch Robinson & Francis Draper

Door and Furniture Knob

1837

G.W. Robinson & Co.

Method of Attaching Glass Knobs to Metallic Sockets

1840

G.W. Robinson & Co.

Spring-Bolt for Door and Other Locks

1840

F. Draper & Co.

Glass Knob for Doors, etc.

1841

E. Robinson & Co.

Latch of Door and Other Locks

1841

E. Robinson & Co.

Window-Fastening

1842

G.W. Robinson & Co.

Spring-Fastener for Window Sashes

1842

G.W. Robinson & Co.

Spring-Fastener for Window Sashes

1842

E. Robinson & Co.

Windlass or Drum for Raising Weights

1842

G.W. Robinson & Co.

Steering Apparatus for Vessels

1843

E. Robinson & Co.

Improvement in the Method of Attaching Door-Knobs to Their Spindles

1843

Wm. Hall & Co.

Lock for Safes, Bank-Vaults, &c.

1843

Wm. Hall & Co.

Door Lock or Latch

1845

Wm. Hall & Co.

Lock for Banks and Safes

1848

Wm. Hall & Co.

Powder-Proof Lock

1851

E. Robinson & Co.

Improved Lock and Key

1859

G.W. Robinson & Co.

Steering Apparatus

1861

G.W. Robinson & Co.

Steering Apparatus

1863

Wm. Hall & Co.

Improvement in Locks

1865

Wm. Hall & Co.

Improvement in Locks

1869

Wm. Hall & Co.

Improvement in Permutation-Locks

1869

George B. Lothrop & Co.

Improved Door Knob

1869

Wm. Hall & Co.

Improved Rose for Door Knobs

1873

Wm. Hall & Co.

Improvement for Bolts in Safe-Doors, &c.

1874

Wm. Hall & Co.

Bank-Lock

1875

E. Robinson & Co.

Improvement in Latches for Doors, Etc.

1877

E. Robinson & Co.

Improvement in Latches for Doors

1883

Wm. Hall & Co.

Door-Knob Attachment

1893

E. Robinson & Co.

Spring-Hinge