U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Device that displays count of rounds in firearm magazines

Patent 5206444 Issued on April 27, 1993. Estimated Expiration Date: Icon_subject November 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

954904

1252094

2828568

3039366

3758978

Magazine contents indicators
Patent #: 4109401
Issued on: 08/29/1978
Inventor: Musgrave

Magazine status indicators
Patent #: 4142313
Issued on: 03/06/1979
Inventor: Musgrave

Magazine status indicating process
Patent #: 4216601
Issued on: 08/12/1980
Inventor: Musgrave

Magazine status indicating devices
Patent #: 4219953
Issued on: 09/02/1980
Inventor: Musgrave

Magazine for a small arm Patent #: 4587756
Issued on: 05/13/1986
Inventor: Jakubaschk ,   et al.

Inventor

Application

No. 614937 filed on 11/16/1990

US Classes:

42/1.02, Magazine shot42/7Grip magazine pistols

Examiners

Primary: Jordan, Charles T.

Attorney, Agent or Firm

Foreign Patent References

  • 463244 FR 02/20/2013
  • 409519 IT 07/20/2013

International Class

F41A 009/62

Abstract

A display device for showing the exact number of rounds remaining in a firearm magazine without removing the magazine from the weapon. The device comprises a grip panel assembly attachable to the frame of an automatic pistol. The assembly includes a grip having a transparent window through which a numbered scale can be seen. The frame and magazine of the firearm are modified, if necessary, to include elongate slits through which a portion of the follower is visible. As the weapon is fired a highly visible marker, strategically placed on the exposed follower, points to succeeding numbers on the calibrated scale, indicating the number of rounds in the magazine at any given time while the magazine remains in the firearm. This method of counting rounds is adaptable to automatic rifles having exposed magazines.

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