43 USC § 1637 - Use of protraction diagrams

---
identifier: "/us/usc/t43/s1637"
source: "usc"
legal_status: "official_prima_facie"
title: "43 USC § 1637 - Use of protraction diagrams"
title_number: 43
title_name: "PUBLIC LANDS"
section_number: "1637"
section_name: "Use of protraction diagrams"
chapter_number: 33
chapter_name: "IMPLEMENTATION OF ALASKA NATIVE CLAIMS SETTLEMENT AND ALASKA STATEHOOD"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Pub. L. 96–487, title IX, § 909, Dec. 2, 1980, 94 Stat. 2447.)"
---


# § 1637. Use of protraction diagrams

43 U.S.C. 160143 U.S.C. 1601

With the agreement of the party to whom a patent is to be issued under this chapter, or the Alaska Native Claims Settlement Act [ et seq.], the Secretary, in his discretion, may base such patent on protraction diagrams in lieu of field surveys. Any person or corporation receiving a patent under this chapter or the Alaska Native Claims Settlement Act [ et seq.] on the basis of a protraction diagram shall receive any gain or bear any loss of acreage due to errors, if any, in such protraction diagram.

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**Source Credit**: (Pub. L. 96–487, title IX, § 909, Dec. 2, 1980, 94 Stat. 2447.)

## Editorial Notes

### References in Text

The Alaska Native Claims Settlement Act, referred to in text, is , , , which is classified generally to chapter 33 (§ 1601 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under  and Tables.