Patents

• Model 1 Specific:

• German patent No. 235,944 was applied / filed on August 07, 1909. The resulting patent was granted on June 1911

• Austrian patent No. 54,841, application date May 23, 1910

• US patent No. 991,398, application date June 9, 1910

• Model 2 Specific:

• German patent No. 271,862 - 1913

  • • #1: rear sight comes up when a cartridge is loaded in the chamber via method 1.

    • #2: rear sight comes up when a cartridge is loaded in the chamber via method 2.

    • #3: front sight comes up when a cartridge is loaded in the chamber

    • #4: rear sight comes up when a cartridge is loaded in the chamber via method 3.

• German patent No. 271,863 - January 8, 1913 Rear sight/loaded-chamber indicator

Model 4 Specific:

• German patent 256,606 dealing with features of the model 4 was applied (filed) on October 21, 1911. The resulting patent was granted in January or February 1913

• Model 8 Specific:

  • German patent No.325374 from 1919-06-24 (issued 1920-09-13) - turnable hammer-axle as safety

  • German patent No.334042 from 1919-07-15 (issued 1921-09-03) - movable trigger guard as lock for disassembling

    • German patent No.335901 from 1919-11-30 - additional patent enhanced this construction

  • German patent No.319461 from 1919-06-24 (issued 1920-03-08) fixing the grip-plates by medallions

    • German patent No.326373 from 1919-12-30 - additional patent enhanced this construction

  • German patent No.334448 from 1919-07-15 (issued 1921-03-15) - separated firing-pin-case with extractor