Search results
Results from the WOW.Com Content Network
Dzus fastener, from US Patent 1955740.png 491 × 737; 111 KB Electrovoice-constant-directivity-horn-1975.jpg 672 × 537; 42 KB Ellipsoid Patent.jpg 383 × 329; 86 KB
LLP, Ladas & Parry. "A Brief History of the Patent Law of the United States". New York, 1999. Web Page. . Muir, Ian, Matthias Brandi-Dohrn, and Stephan Gruber. European Patent Law : Law and Procedure under the Epc and Pct. Oxford; New York: Oxford University Press, 1999. Robert B. Matchette et al. "Records of the Patent and Trademark Office".
Patent applications can be filed at the United States Patent and Trademark Office (USPTO). Prior to June 7, 1995, the duration of a US utility patent was 17 years from patent issuance. Since that date, the duration of the US utility patent is 20 years from the earliest effective filing date.
The X generally appears at the end of the numbers hand-written on full-page patent images; however, in patent collections and for search purposes, the X is considered to be the patent type – analogous to the "D" of design patents – and appears at the beginning of the number.
In the US, patent maintenance fees are due on 3.5, 7.5 and 11.5 anniversaries of the patent issuance. [93] Only ca. 50% of issued US patents are maintained full term. Large corporations tend to pay maintenance fees through the full term, while small companies are more likely to abandon their patents earlier, even though the due fees are ca. 5 ...
The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years". The 1836 Patent Act (5 Stat. 117, 119, 5) provided (in addition to the fourteen-year term) an extension "for the term of seven years from and after the expiration of the first term" in certain circumstances, when the inventor hasn't got "a reasonable remuneration for ...
If your browser has difficulty displaying or downloading TIFF images, consider installing a TIFF capable extension such as AlternaTIFF for Mozilla Firefox, Opera, and Google Chrome and Netscape 9.0.0.6, or use a TIFF capable browser such as Links or Safari version 3.2.1 (may display the wrong size but allows full images to be saved).
United States patent law required inventors to submit scale models of their inventions, which were retained by the Patent Office and required housing. In Pierre (Peter) Charles L'Enfant's plan for the capital city, the site of the Patent Office Building, halfway between the Capitol and the President's House, was set aside for a monumental ...