Gerson Strassberg, WA2JXX invented this item which no self-respecting geek would have been without. Now, what did he invent?

[humanearth]

Slide Rule
Plastic Pocket Protector
Pocket Calculator
Digital Watch

Slide Ruler (18th Century)

Plastic Pocket Protector (1952 when available to the public)

Pocket Calculator (1971)

Electronic Digital Watch (1972)

Updates

+1 y

Answer: Plastic Pocket Protector

It's been years since I've seen a plastic pocket protector, but it was designed to slip into your shirt pocket and hold your ink pens. Geek fashion dictated that you not only have a plastic pocket protector, but also have multiple pens tucked into it.

[Likes2drive]

I’m guessing the pocket protector because the slide rule has been around for a long time and I doubt it was the calculator or the digital watch

[exitseven]

Plastic pocket protector.

[humanearth]

Did you cheat or did you really know this one

[exitseven]

It was a process of elimination. I knew it was not the calculator or the digital watch. The slide rule was out as well because the inventor lived before there was ham radio.

[AviatorTom]

Gerson Strassberg claimed to invent the pocket protector, but history proves otherwise.

Hurley Smith invented the pocket protector. He filed for a patent on June 3, 1943 and was awarded US patent 2417786A on March 18, 1947. Gerson Strassberg didn't claim to be the inventor until 1952.

https://patents.google.com/patent/US2417786A/en

[strateguy632]

4th.