Plomb battery pliers

[Northwoods]

Got a box at auction last nite.  Two battery pliers in it.
One had a tiny diamond logo with US inside.
The other is marked on an inset inside the diamond pattern handle grips:
2218 PLOMB TOOL CO. L.A.
They seem identical in design with these pictured in AA except for the forging and stamping information--and mine are definitely # 2218, not 218 as in this AA picture.
 
http://alloy-artifacts.org/Photos/tools/plomb_218_pliers_battery_mfd_f_cropped_inset2.jpg

I found a pair of Danielson pliers exactly like mine--except for the brand name--as well.
AA tells me that, "In the mid 1940s Danielson began providing contract manufacturing services to Plomb Tool of Los Angeles, and shortly after this (in 1947) J.P. Danielson was acquired by Plomb."
Has anyone seen any pliers like mine?

[HeelSpur]

The US in a diamond is P. Lowentraut mfg. co.,
I have a bicycle wrench with that logo.

[Northwoods]

Thanks HeelSpur.  I used your info and some Google skilz and found that itty bitty trademark.
Good work!

[EVILDR235]

I also have a pair of Plomb battery pliers. I am moving all my stuff into my garage from my shop and i am finding thing i didn't even know i had.

EvilDr235

[Northwoods]

That's what we do when the temperature drops!