Okay...

1. Old Pyrene Fire Extinguisher
2. Pyrene Fire Extinguisher Serial Number
3. Pyrene Fire Extinguisher Serial Number Search
4. Pyrene Fire Extinguisher Serial Number Lookup
5. Pyrene Fire Extinguisher Serial Number Cross Reference
6. Pyrene Fire Extinguisher Models
7. Pyrene Fire Extinguisher Serial Number

Another such extinguisher that is no longer in production is the pump extinguisher, created by the Pyrene Manufacturing Co. In 1905, whose chemical reactions created a deadly gas byproduct. It wasn't until the mid-20 th century that the oxygen-depleting fire extinguishers were developed, and these are often used today. Nov 02, 2017 The model number is printed on the fire extinguisher label. For units produced in 2007 and beyond, the date of manufacture is a 10-digit date code printed on the side of the cylinder, near the bottom.

Here's a theory for 'ya:
I've noticed that the early (one patent) Pyrene WW2 Heavy Vehicle Type decal-type FE I have has an 'S' prefixed serial/lot(?) number.
Two of the later brass tag (2 patent) H-V-Ts I have show

Old Pyrene Fire Extinguisher

'U' prefixed serial/lot numbers...

Pyrene Fire Extinguisher Serial Number

Pyrene Fire Extinguisher Serial Number Search

I'm wondering if the prefix indicates the year: S=1943, T=1944, U=1945 etc. This seems to correspond to the patent references. Two patents were effective in 1944, therefore one patent reference is certainly pre-'44. A decal-type military painted FE is certainly WW2 -- my guess beginning c.1942. I had a decal type two-patent HVT that went away recently. If it was a 'T' prefix I'd be willing to bet that it's more than coincidence. Further, I'm thinking that all brass tag, two-patent HVTs will be 'U' or higher prefixed (late/post war).
Anyone have Pyrene HVT FEs they wish to check against this?

Pyrene Fire Extinguisher Serial Number Lookup

Jeff Q.

Pyrene Fire Extinguisher Serial Number Cross Reference

AZ House of Pointless Fire Extinguisher Trivia

Pyrene Fire Extinguisher Models

Pyrene Fire Extinguisher Serial Number

Title	1917 Pyrene Fire Extinguisher
Object Name	Extinguisher, Fire
Description	1917 Pyrene Fire Extinguisher. Brass(?) metal fire extinguisher is cylindrical in shape with a tiny opening and bottom and what appears to be a pressure valve and T-shaped pump handle at top. Black label on front reads, 'Pyrene / FIRE / EXTINGUISHER / ... / TO OPERATE / TURN HANDLE TO LEFT / WORK LIKE A PUMP.' Directions indicate that, once used, pump should immediately be filled with Pyrene liquid. There is a loop bracket mounted to top back for mounting to a wall.
Date	1917
Collection	3D - Regulative & Protective Tools & Equipment
Creator	Pyrene Manufacturing Co.
Role	Manufacturer
Inscription Text	'REG. / U.S.PAT OFF / 1917 / COPYRIGHT / PYRENE / MFG. CO. / NEW YORK, / USA' (maker's mark at top of label); (see description for more text on label)
Provenance	Extinguisher is from the San Mateo home of Everett & Maybelle Shumacher.
Dimensions	H-14.25 W-3 D-3 inches
Search Terms	Fire San Mateo Shumacher, Maybelle B., Everett D.
Subjects	Fire Fire extinguishers Safety
People	Shumacher, Maybelle B., Everett D.
Credit line	Courtesy of Nancy Schumacher
Catalog Number	2014.015.002