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Portable Document Format (PDF) is a file format created by Adobe Systems for document exchange. PDF is used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system. Each PDF file encapsulates a complete description of a fixed-layout 2D document that includes the text, fonts, images, and 2D vector graphics which compose the documents.

The Indian Copyright Act applies in India to works first published in India. According to the Indian Copyright Act, 1957, as amended up to Act No. 27 of 2012 (Chapter V, Section 25):

• Anonymous works, photographs, cinematographic works, sound recordings, government works, and works of corporate authorship or of international organizations enter the public domain 60 years after the date on which they were first published, counted from the beginning of the following calendar year (i.e. as of 2024, works published prior to 1 January 1964 are considered public domain).
• Posthumous works (other than those above) enter the public domain after 60 years from publication date, counted from the beginning of the following calendar year.
• Any kind of work other than the above enters the public domain 60 years after the author's death (or in the case of a multi-author work, the death of the last surviving author), counted from the beginning of the following calendar year.
• Text of laws, judicial opinions, and other government reports are free from copyright.

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This work is in the public domain in the United States because it meets three requirements:

1. it was first published outside the United States (and not published in the U.S. within 30 days),
2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
3. it was in the public domain in its home country (India) on the URAA date (1 January 1996).

العربية | বাংলা | English | español | 日本語 | മലയാളം | русский | +/−

This work is in the public domain in the United States because it meets three requirements:

1. it was first published outside the United States (and not published in the U.S. within 30 days),
2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
3. it was in the public domain in its home country on the URAA date (January 1, 1996 for most countries).