What does Pat. Off. stand for?

Pat. Off. stands for "[U.S.] Patent Office"

How to abbreviate "[U.S.] Patent Office"?

"[U.S.] Patent Office" can be abbreviated as Pat. Off.

What is the meaning of Pat. Off. abbreviation?

The meaning of Pat. Off. abbreviation is "[U.S.] Patent Office"

What does Pat. Off. mean?

Pat. Off. as abbreviation means "[U.S.] Patent Office"