Explore the USPTO Patent Public Search's Advanced Search interface. Identify the available search modes, list the three main patent databases it covers, and confirm if 'Plurals' and 'British Equivalents' are enabled by default for searches. Provide all findings.
Navigate to the USPTO website. Locate and click on the 'Search for patents' link. Click on the 'Patent Public Search' link. Select and click on the 'Advanced search' link. Scroll down to view the full search interface. Identify and list the distinct search modes. Identify and list the three primary patent databases. Determine and state the default status of 'Plurals' and 'British Equivalents'.
Successfully navigate to the 'Advanced Search' interface of the Patent Public Search tool. Correctly list the three distinct search modes: Basic Search, Advanced Search, and Number Search. Correctly list the three primary databases: US-PGPUB, USPAT, and USOCR. Correctly state that 'Plurals' is enabled by default. Correctly state that 'British Equivalents' is enabled by default.