| 1924 US ORDNANCE COMPANY Breech Mechanism Patent |
| 1922 AUTO ORDNANCE CORP Breech Mechanism Guns |
| 1922 AUTO ORDNANCE CORP Breech Closure Mechanism |
| 1950 BEARDSLEY Breech Operating Mechanism Patent |
| 1949 COLT S Breech Mechanism Automatic Firearms |
| 1957 EDMUND Powder Case Lock Breech Mechanism |
| 1922 TALIAFERRO Breech Mechanism For Guns Patent |
| 1949 GEORGE Breech Mechanism Automatic Firearms |
| 1947 GEN MOTORS CORP Breech Bolt Latching Mechanism |
| 1921 CHARLES Breech Block Mechanism Patent Print |
| 1948 WILLIAM Breech Operating Mechanism Patent |
| 1961 EVANS Hydraulically Operated Breech Mechanism |
| 1955 DIXON Hydraulic Breech Operating Mechanism |
| 1929 MCCANN Breech Mechanism For Guns Patent |
| 1956 HARVEY Breech Mechanism A Firearm Art Print |
| 1942 HUBERT SCOTT PAINE Breech Mechanism Ordnance |
| 1935 WHITE Breech Closure Firing Mechanism Art |
| 1952 MAY Breech Block Firing Mechanism Therein |
| 1927 TREVOR Ordnance Breech Mechanism Patent |
| 1927 ESSEN PIETER Breech Mechanism Patent Print |
| 1957 GAIDOS Breech Mechanism For A Rifle Patent |
| 1931 MCCANN Breech Block Operating Mechanism Art |
| 1947 CORNETT Breech Mechanism Machine Guns Art |
| 1961 ERWIN Cocking Breech Mechanism Automatic Firearms |
| 1959 OLIN MATHIESON Multi Part Breech Bolt Mechanism |
| 1952 BORJE Pivoted Breech Block Locking Mechanism |
| 1968 GIULIANO Short Recoil Breech Actuating Mechanism |
| 1925 ALBIN Rifle With Pistol Breech Mechanism |
| 1920 VICKERS LTD Ordnance Breech Mechanism Art |
| 1924 STAMBAUGH Breech Mechanism Patent Print Art |
| 1931 J E BROWNING Breech Mechanism Firearms Art |
| 1946 WILLIAM Breech Block Mechanism Patent Print |
| 1921 JOHN Semi Automatic Breech Mechanism Guns |
| 1949 GEN MOTORS CORP Breech Bolt Mechanism Art |
| 1942 COFFMAN Breech Mechanism Power Generating Units |
| 1922 ASBURY DORSEY Breech Mechanism Patent Print |
| 1924 TREVOR Ordnance Breech Mechanism Patent |
| 1925 BETHLEHEM STEEL CORP Breech Mechanism Art |
| 1966 BENSON Breech Bolt Mechanism Bolt Action Firearms |
| 1953 PETERS Breech Mechanism For Firearms Patent |
| 1959 BUTLER Multi Part Breech Bolt Mechanism Art |
| 1952 BOFORS AB Pivoted Breech Block Locking Mechanism |
| 1954 COCHRAN Breech Operating Mechanism Patent |
| 1923 TOM Breech Closing Mechanism Patent Print |
| 1920 STAMBAUGH Breech Mechanism Patent Print Art |
| 1945 ELIZABETH Breech Mechanism Firearms Art |
| 1944 SWARTZ Breech Mechanism Automatic Firearms |
| 1958 STERN Breech Block Mechanism Patent Print |
| 1942 GEORGE Breech Mechanism Automatic Firearms |
| 1944 DE Breech Mechanism Automatic Firearms Art |
| 1928 MCCANN Breech Opening Mechanism Patent |
| 1922 TREVOR Ordnance Breech Mechanism Patent |
| 1924 STORER Breech Closing Gun Firing Mechanism |
| 1959 HARRINGTON RICHARDSON INC Breech Release Mechanism |
| 1952 LEO Breech Mechanism Guns Having Replaceable Liner |
| 1964 PAUL Breech Mechanism Automatic Weapons Art |
| 1952 FINN Wear Plate Breech Mechanism Guns Art |
| 1960 HUGHEL Breech Bolt Mechanism Repeating Rifles |
| 1960 FRIEDRICH Breech Mechanism Automatic Firearms |
| 1949 RATAICZAK Breech Bolt Mechanism Patent |
| 1920 TREVOR Breech Mechanism Of Ordnance Patent |
| 1924 VICKERS LTD Ordnance Breech Mechanism Art |
| 1947 RATAICZAK Breech Bolt Latching Mechanism |
| 1922 TALIAFERRO Breech Closure Mechanism Patent |
| 1928 TREVOR Ordnance Breech Mechanism Patent |
| 1920 TREVOR Ordnance Breech Mechanism Patent |
| 1953 SIMPSON Breech Locking Mechanism Patent |
| 1947 WALTER Breech Loading Mechanism Ordnance |
| 1959 MULNO Breech Release Mechanism Patent Print |
| 1968 DIETSCH Breech Mechanism A Recoilless Gun |
| 1950 MINASOLA Breech Bolt Reciprocating Mechanism |
| 1920 US ORDNANCE Breech Mechanism Ordnance Art |
| 1922 VICKERS LTD Ordnance Breech Mechanism Art |
| SV-BREECH MECHANISM DEPT.-NAVY YARD-WASHINGTON |