| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | Italy | 1 | |
| #6 | Japan | 1 | |
| #7 | Mexico | 1 | |
| #8 | Philippines | 1 | |
| #9 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Time tables | |
| #2 | Books |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lane Ronald S | 11 |
| #2 | Wittes James M | 1 |
| #3 | Ronarudo Esu Reen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US7654499B2 | Bookstand that folds thin enough to serve as a bookmark | |
| US4596082A | Permanent calendar construction | |
| US4393611A | Perpetual calendar | |
| JPS5576376A | Improved perpetual calendar assembly | |
| AU4429279A | Permanent calendar | |
| US4275516A | Permanent calendar construction | |
| US4142311A | Permanent calendar |