|
US4077726A
|
|
Grip-lock pen
|
|
US3510977A
|
|
Rotatable display pen
|
|
US3453694A
|
|
Separate plastic pen cap and clip
|
|
US3288115A
|
|
Ball-point pen mechanism
|
|
US3353899A
|
|
Fiber tipped pen
|
|
GB1104031A
|
|
Improvements relating to writing instruments
|
|
GB1018920A
|
|
Pen cartridge operating mechanism
|
|
FR1415824A
|
|
Multi-color pen
|
|
FR1399456A
|
|
Multiple Cartridge Pen Holder
|
|
US3225745A
|
|
Plunger latch for a ball-point pen
|
|
GB1019298A
|
|
Multi-cartridge ball-point pen
|
|
US3219016A
|
|
Locked multi-cartridge pen
|
|
US3191329A
|
|
Display cap ball-point pen
|
|
GB1022784A
|
|
Display ball-point pen
|
|
GB1022785A
|
|
Display ball-point pen
|
|
US3077692A
|
|
Display ball-point pen
|
|
US3143101A
|
|
Multi-cartridge pen
|
|
US3077691A
|
|
Pocketless display pen
|
|
US3154873A
|
|
Tubular article with pocket
|
|
US3064624A
|
|
Writing device
|
