| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 54 | |
| #2 | Switzerland | 2 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Chemical engineering | |
| #5 | Machine tools | |
| #6 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eugen Prestinari | 25 |
| #2 | Roy Wilfrid J | 9 |
| #3 | Sand John F | 5 |
| #4 | John Sand | 4 |
| #5 | Emil Haeffner | 4 |
| #6 | Herman Kuehn | 2 |
| #7 | William Lichtenfels | 2 |
| #8 | Prestinari Eugen F | 2 |
| #9 | Gemex Company | 2 |
| #10 | Roy Wilfred J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2737325A | Ornamentation of wrist watch straps | |
| US2636359A | Expansible bracelet | |
| US2627344A | Display tray | |
| US2666243A | Spring hook clasp | |
| US2637089A | Spring hook clasp | |
| US2648886A | End-attaching device | |
| US2536391A | Bracelet chain construction | |
| US2572384A | Strap-end retaining device | |
| US2610463A | Method of making bracelet chains | |
| US2518716A | Clasp construction | |
| US2246221A | Metal strap construction | |
| US2254873A | Fastening device | |
| US2236445A | Drying process | |
| US2254755A | Bracelet construction | |
| US2273218A | Bracelet construction | |
| US2226138A | Watchcase | |
| US2205092A | Clasp | |
| US2131454A | Bracelet cord clasp | |
| US2185736A | Bracelet connecting link | |
| US2237931A | Bracelet construction |