Nappen is “one of the most respected legal authorities in the nation on the topic of knife law” and his book is a great resource on knife law. For more information on knife laws, you may want to download the LegalBlade™ App – Knife Laws in America™. Federal knife law only applies those traveling from one to state to another, entering federal … The knife specific language provides that automatic knives may not be possessed, and are prohibited as ‘offensive weapons’ unless the knife is kept and dealt with ‘as a curio’. These concern knives that may be worn openly but not concealed, knives that can be carried both openly and concealed, and knives that are always illegal to carry.. What Are the Switch Blade Knife Laws in the United States? At a Glance: The primary Pennsylvania statute regarding knives is § 908 of the PA crimes code, captioned ‘Prohibited Offensive Weapons’. There are federal, state, and local laws regulating knives. There is only one federal law regulating knives - the Switchblade Knife Act of 1958 and an amendment to the act in 2009 . You must refer to your state laws to determine whether your knife meets state requirements, but rest assured that assisted-opening knives are legal in all 50 states. LegalBlade™ is the world’s first knife law app. Federal Knife Laws by State. 4) “Knife Laws of the U.S.: Loopholes, Pitfalls & Secrets” by Evan F. Nappen. Knife Laws by State 2020 Certain knives are used mostly for protection, for hunting, and for handyman work. LegalBlade™ provides guidance at your fingertips to the knife laws of all 50 states as well as cities and local jurisdictions in the United States. Some other knives that are legal within the state include: Bowie knives; Large knives (no restriction in size) California knife laws break down into 3 categories of devices. Regrettably, quite a few states also regulate knives on a style and length basis, perhaps requiring a citizen to seek and obtain a concealed weapons permit before carrying a “restricted” knife and a few special nanny states rely on nebulously worded laws that are easily contorted to fit the agenda of the arresting officer or the court. 3.5" knife used in self defense may be prosecutable: State v Holloway, 528 A.2d 1176 (1987), despite State v Harris 258 A.2d 319 (1968) which held that without obvious intent, the 4" limit was strict and could not be lowered by a finding that the knife was a dangerous weapon. It has a pretty thorough list of knife laws throughout the United States. Pocketknives are allowed for concealed carry up to 4.75”! Federal Knife Laws by State. Getting caught or crossing state lines with an illegal knife or switchblade can lead to serious consequences like fines or even jail time, so it’s important to know your state’s knife laws and the knife laws of any state you may travel to. In California, the knife laws are considered some of the strictest in the country. Throughout the state, it is considered legal to purchase and carry any knife that is under two inches in length. Owning a knife is not illegal within the United States. All other knives can legally be purchased and owned, including automatic knives, gravity knives, and undetectable knives. However, each state has different regulations on the types of knives that people can have. 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