Proofhouse.com
To perform a Diamondback bike serial number lookup, locate the serial number on the bike frame, typically found near the bottom bracket. Then, visit the Diamondback website or contact their customer service with the serial number to retrieve information about the bike's model, year of manufacture, and other details.
Ruger website, under Customer Service, Historical Data, pick rifle pistol revolver or shotgun, then your model, and date of manufacture by serial number range is shown.
Ruger website, under customer service, historical data, revolver, find your model, date ranges are there. Very nice of Ruger to do that.
Go to the Colt website.
swisher.com/
The BATFE website has the answer.
Ruger website, under Customer Service, Historical Data, pick rifle pistol revolver or shotgun, then your model, and date of manufacture by serial number range is shown.
manufacture website
Ruger's website lists the current offerings.
You can find it either on your computer's manufacture website such as Dell, HP, Sony, IBM and so on. Or on the sound card manufacture website.
Contact Ruger through their website. IIRC, Ruger has information on their website to check date of manufacture.
The purpose for a manufacture company to have a branding design is clearly depict the website as a strong brand in its field and to opimize the website with a modern design.