[n: Record Carriers] {g11b 9/00a4} Patents (Class G9B/9.008)

Cross-Reference Art Collections

[n: characterised by the form] {g11b 9/00a4f} (Class G9B/9.009)
[n: characterised by the memorising material or structure] {g11b 9/00a4m} (Class G9B/9.011)

There are no patents to show for this class.