Name three weapons that were first used by germans and when they were utilized

There are many types of weapons invented by the Germans, each with it's own purpose. Here are three weapons made by the Germans (world war era specifically)

1. sturmgewehr 44 (STG 44).

The sturmgewehr 44 was invented in 1943 to fill the gap between the MP40's fire rate, and the larger more accurate bolt action Karabiner 98k . The weapon proved itself but did little to change the course of the war as it was introduced too late.

2. 7.5 cm Pak 40

The pak 40 was introduced in 1939 and became well known, not for it's initial use as artillery but an anti-tank gun.

3. Stielhandgranate

Invented in 1915, the Stielhandgranate  was grenade that set it apart for the rest, it's handle design made it easier to throw, there was also a pin attached to the grenade to make it easier to carrier and to stop it from rolling.

question is unclear.

i can't sorry.

post the full question so i can .