US79541A - Improvement in railroad-oab ventilators - Google Patents
Improvement in railroad-oab ventilators Download PDFInfo
- Publication number
- US79541A US79541A US79541DA US79541A US 79541 A US79541 A US 79541A US 79541D A US79541D A US 79541DA US 79541 A US79541 A US 79541A
- Authority
- US
- United States
- Prior art keywords
- oab
- ventilators
- railroad
- improvement
- oab ventilators
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/50—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with more than one kind of movement
Description
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US79541A true US79541A (en) | 1868-07-07 |
Family
ID=2149037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US79541D Expired - Lifetime US79541A (en) | Improvement in railroad-oab ventilators |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US79541A (en) |
-
0
- US US79541D patent/US79541A/en not_active Expired - Lifetime
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