| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 71 | |
| #2 | Canada | 7 | |
| #3 | United Kingdom | 4 | |
| #4 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Railway brakes | |
| #2 | Unspecified technologies | |
| #3 | Making forged metal products | |
| #4 | Nails | |
| #5 | Clutches and brakes | |
| #6 | Shafts | |
| #7 | Punching metal | |
| #8 | Forging | |
| #9 | Foundations and excavations | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frederic Schaefer | 59 |
| #2 | Summerhays Elmer M | 5 |
| #3 | Coulter Andrew F | 3 |
| #4 | Schaefer Frederic | 2 |
| #5 | Kern William A | 2 |
| #6 | Summers J Mills | 2 |
| #7 | Otterson Oscar | 1 |
| #8 | Busse Edwin G | 1 |
| #9 | Oscar Otterson | 1 |
| #10 | Fendner Willard J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2469083A | Brake beam | |
| US2466330A | One-piece wear plate | |
| US2471287A | Brake rigging with beam-retracting spring | |
| US2448419A | Adjustable dead lever guide | |
| US2446341A | Brake beam | |
| US2486066A | Brake beam | |
| US2461183A | Brake beam | |
| US2455316A | Brake beam | |
| US2392771A | Brake lever for railway car brake rigging | |
| US2383743A | Brake hanger wear plate | |
| US2373420A | Brake hanger | |
| US2315351A | Embankment retainer | |
| US2276065A | Brake beam head | |
| US2227915A | Expansible wear plate | |
| GB525215A | Improvements in or relating to method of and apparatus for straightening bars, rounds or the like | |
| US2176724A | Brake shoe keylock | |
| US2206690A | Cushioned wear plate | |
| US2206676A | Brake beam | |
| US2199271A | Connecting pin | |
| US2199117A | Brake hanger dampener |