What kind of document is P?

File p is a patent type.

Patent documents are documents that record all kinds of relevant documents produced in the process of patent application, examination and approval.

1. Patent documents in a narrow sense refer to patent application specifications including patent claims, specifications, claims and abstracts, and documents of recognized patent specifications.

2. Patent documents in a broad sense also include patent bulletins, patent abstracts, various search indexes and reference books. Patent literature is a kind of literature that integrates technical, economic and legal information.

Reference is the type of related literature information resources cited for writing or editing papers and works;

1 and m are monographs.

2.j is a periodical.

C is a conference paper.

D is a dissertation.

5.p is a patent.

6.s is the standard.

7.DB is a database.

8.OL refers to the online network.

9.DB/OL is an online database.

10 and DB/MT are tape databases.

1 1, M/CD are CD books.

12, CP/DK disk software. ?

13, J/OL online journal.

14, EB/OL online electronic bulletin.

Refer to the above? Baidu Encyclopedia-Patent Literature