@article{44834,
      recid = {44834},
      title = {International Patent Classification (IPC)},
      pages = {7 pages ;},
      abstract = {An effective and easy-to-use system to classify and search  patent documents},
      url = {http://tind.wipo.int/record/44834},
      doi = {https://doi.org/10.34667/tind.44834},
}