Intangible Assets - Net (Details) - USD ($) |
Nov. 30, 2017 |
Nov. 30, 2016 |
|---|---|---|
| Schedule of Intangible Assets | ||
| Patents and trademarks | $ 578,937 | $ 580,007 |
| Less: Accumulated amortization | 146,617 | 146,229 |
| Intangible Assets - Net | $ 432,320 | $ 433,778 |
| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|