Dynamic awarding of prizes in chance-based contests
US-9142081-B1 · Sep 22, 2015 · US
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Crawford David patents in 2015
Crawford David was listed as an assignee on 2 patent publications in 2015.
| Metric | Value |
|---|---|
| Company | Crawford David |
| Year | 2015 |
| Patents | 2 |
Patents
Representative publications for Crawford David in 2015.
Vacuum trap
US-9057388-B2 · Jun 16, 2015 · US
Top CPC classifications
Most common classification codes for Crawford David in 2015.
| CPC | Patents |
|---|---|
| C23C16/4412 | 1 |
| C23C16/45536 | 1 |
| C23C16/45587 | 1 |
| C23C16/45589 | 1 |
| C23C16/50 | 1 |
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