1818

George Whitfield Robinson

Patent Stock Lock

1825

Securing Lightning Rods to Houses

1826

Manufacturing Glass Knobs for Doors, Drawers, etc

1831

S. Richards, Glass Knobs

1836

Enoch Robinson & Francis Draper

Ferrule Knob for Doors, &c.

1836

Enoch Robinson & Francis Draper

Ferrule Knob for Doors and Furniture

1836

E. Robinson & Co.

Ferrule Knob for Doors and Furniture

1836

Enoch Robinson & Francis Draper

Door and Furniture Knob

1836

Enoch Robinson & Francis Draper

Door, Commode, &c. Knob

c. 1836

E. Robinson & Co.

1836 US98 Patent Knobs

1837

G.W. Robinson & Co.

Method of Attaching Glass Knobs to Metallic Sockets

1837

E. Robinson & Co.

E. & G.W. Robinson Patent Model

1840

G.W. Robinson & Co.

Spring-Bolt for Door and Other Locks

1840

Spring-Bolt for Door and Other Locks

1840

F. Draper & Co.

Glass Knob for Doors, etc.

1840

F. Draper & Co.

Glass Knob for Doors, etc.

1841

E. Robinson & Co.

Latch of Door and Other Locks

c. 1841

E. Robinson & Co.

Enoch Robinson and William Hall’s Improved Lock

1841

E. Robinson & Co.

Window-Fastening

c. 1860

E. Robinson & Co.

Bronze Sash Fastener

1841

Window-Fastening

1842

G.W. Robinson & Co.

Spring-Fastener for Window Sashes

1841

G.W. Robinson & Co.

Spring-Fastener for Window Sashes

c. 1840s

E. Robinson & Co.

Spring-Fastener for Window-Sashes

c. 1840s

E. Robinson & Co.

Spring-Fastener for Window-Sashes

1842

E. Robinson & Co.

Windlass or Drum for Raising Weights

1842

E. Robinson & Co.

Windlass or Drum for Raising Weights

1842

G.W. Robinson & Co.

Steering Apparatus for Vessels

1842

G.W. Robinson & Co.

George W. Robinson’s and Ezra B. Robinson’s Improved Steering Apparatus

1843

E. Robinson & Co.

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

1843

E. Robinson & Co.

Enoch Robinson’s Improvements in the Manufacture of Door Knobs

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

1855

Silvered Glass Door Knobs

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.

1875

E. Robinson & Co.

Latches for Doors, &c.

c. 1870s

E. Robinson & Co.

Bronze Mortise Bit Key Door Lock

1877

E. Robinson & Co.

Improvement in Latches for Doors

1883

Wm. Hall & Co.

Door-Knob Attachment

c. 1883

Wm. Hall & Co.

William F. Hall Patent Knob

1893

E. Robinson & Co.

Spring-Hinge