Trademark Stamps
Doorknobs by Hopkins & Dickinson
A-11300
Pigeon
A-11300
A-11301
Pigeon
A-11301
A-11900
Lion
A-11900
A-12000
Lion
A-12000
A-13600
Swan
A-13600
A-30600
Diana
A-30600
A-30610
A-30610
A-32620
Hopkins Dickinson
A-32620
A-32622
French Renaissance
A-32622
C-12000
Classic
C-12000
D-11100
Basket
D-11100
D-11110
Basket
D-11110
D-11300
Hopkins Dickinson
D-11300
D-13900
Hammered Design
D-13900
E-10810
Hopkins Dickinson
E-10810
H-10200
Hopkins Dickinson
H-10200
H-22400
Hopkins Dickinson
H-22400
H-28700
Vernacular
H-28700
H-40700
Italian Renaissance
H-40700
H-40710
Italian Renaissance
H-40710
J-10900
Hopkins Dickinson
J-10900
J-11000
Hopkins Dickinson
J-11000
J-11100
Hopkins Dickinson
J-11100
J-11600
Hopkins Dickinson
J-11600
J-12000
Hopkins Dickinson
J-12000
K-10100
Hopkins Dickinson
K-10100
K-10200
Hopkins Dickinson
K-10200
K-10300
Hopkins Dickinson
K-10300
K-10700
Hopkins Dickinson
K-10700
K-10710
Hopkins Dickinson
K-10710
K-21300
Hopkins Dickinson
K-21300
K-22200
Hopkins Dickinson
K-22200
K-23010
K-23010
K-24300
K-24300
L-10100
Hopkins Dickinson
L-10100
L-10200
Hopkins Dickinson
L-10200
L-14200
Hopkins & Dickerson
L-14200
L-14203
Hopkins Dickinson
L-14203
M-13730
M-13730
M-13740
M-13740
M-13752
M-13752
M-13803
Newman
M-13803
M-14610
Hopkins Dickinson
M-14610
M-16600
Hopkins Dickinson
M-16600
P-10120
Treasury Seal
P-10120
P-10130
Treasury Seal
P-10130
P-10140
Treasury Seal
P-10140
P-10141
Treasury Seal
P-10141
P-10143
Treasury Seal
P-10143
P-10300
Navy Department
P-10300
P-10400
War Department
P-10400