US Patent: AI9 - Spark Arrester for Locomotives, &c.


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: AI9

Spark Arrester for Locomotives, &c.

Patentee:

Joseph P. Fairlamb (exact or similar names) - Philadelphia, PA

USPTO Classifications:

Tool Categories:

transportation : railroads : railroad locomotives : locomotive spark arresters

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Granted:	Jun. 14, 1838

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens

Description:

In the United States, the term "Additional Improvement Patents" refers to a specific, historical category of patents used between 1837 and 1861. Under the Patent Act of 1836, an inventor could add improvements to their already existing patent rather than filing an entirely new application.

AI (Additional Improvements) patents were issued between 1836 and 1861 and only 318 were ever issued.

No patent drawings or specification are available. Information is taken from James A. Paulaskas' 1977 book, "Additional Improvement Patents, 1837-1861" plus the original patent.