| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 50 | |
| #2 | Canada | 10 | |
| #3 | United Kingdom | 8 | |
| #4 | France | 7 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Mechanical elements | |
| #5 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Unspecified technologies | |
| #3 | Vehicle wheels | |
| #4 | Shafts | |
| #5 | Rail vehicle suspensions | |
| #6 | Pistons and sealings | |
| #7 | Lubricating | |
| #8 | Shafts | |
| #9 | Transport or storage devices | |
| #10 | Couplings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sanford Hugh W | 28 |
| #2 | Jones Harry W | 10 |
| #3 | Jones Robert E | 9 |
| #4 | Hart Stow Audley | 5 |
| #5 | Mccallen Perry S | 3 |
| #6 | Jones Jr George E | 2 |
| #7 | Sanford Jr Hugh W | 2 |
| #8 | Cate Thomas M | 2 |
| #9 | Sanford Hugh W Jr | 1 |
| #10 | Stow Audley H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2728471A | Latch tripping mechanisms | |
| US2737128A | Car for transport of miners | |
| US2621809A | Latch tripping mechanism | |
| US2675135A | Latch tripping mechanism | |
| US2635558A | Drop bottom dumping vehicle | |
| GB659144A | Overlapping car ends for mine cars | |
| US2598797A | Mine car sealing device | |
| US2624292A | Door latch mechanism | |
| US2567604A | Mine car sealing device | |
| US2640441A | Overlapping car end for mine cars | |
| GB653447A | Latch tripping devices for conveying equipment | |
| US2602402A | Mine car sealing device | |
| US2602404A | Mine car sealing device | |
| US2628859A | Wheel and axle assembly | |
| US2640608A | Latch tripping mechanism | |
| US2548395A | Wide frame mine car | |
| US2646179A | Latch tripping device | |
| US2577040A | Mine car sealing device | |
| US2634007A | Latch tripping device | |
| US2573735A | Wheel and axle seal |