CH525444A - Roof fan - Google Patents
Roof fanInfo
- Publication number
- CH525444A CH525444A CH670170A CH670170A CH525444A CH 525444 A CH525444 A CH 525444A CH 670170 A CH670170 A CH 670170A CH 670170 A CH670170 A CH 670170A CH 525444 A CH525444 A CH 525444A
- Authority
- CH
- Switzerland
- Prior art keywords
- roof fan
- roof
- fan
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/02—Roof ventilation
- F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH670170A CH525444A (en) | 1970-05-05 | 1970-05-05 | Roof fan |
FR7021206A FR2092177A5 (en) | 1970-05-05 | 1970-06-10 | |
BE765051A BE765051A (en) | 1970-05-05 | 1971-03-31 | ROOF FAN |
DE19712115764 DE2115764A1 (en) | 1970-05-05 | 1971-04-01 | Roof fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH670170A CH525444A (en) | 1970-05-05 | 1970-05-05 | Roof fan |
Publications (1)
Publication Number | Publication Date |
---|---|
CH525444A true CH525444A (en) | 1972-07-15 |
Family
ID=4313683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH670170A CH525444A (en) | 1970-05-05 | 1970-05-05 | Roof fan |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE765051A (en) |
CH (1) | CH525444A (en) |
DE (1) | DE2115764A1 (en) |
FR (1) | FR2092177A5 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3843218A1 (en) * | 1988-12-22 | 1990-06-28 | Grau Gmbh & Co Holdingges | METHOD AND DEVICE FOR OPERATING AN AUTOMATIC DATA CARRIER ARCHIVE |
FR2781278B1 (en) * | 1998-07-17 | 2000-09-29 | Andre Amphoux | MIXED, STATIC / DYNAMIC DEVICE FOR THE DISCHARGE OF GASEOUS FLUIDS |
-
1970
- 1970-05-05 CH CH670170A patent/CH525444A/en not_active IP Right Cessation
- 1970-06-10 FR FR7021206A patent/FR2092177A5/fr not_active Expired
-
1971
- 1971-03-31 BE BE765051A patent/BE765051A/en unknown
- 1971-04-01 DE DE19712115764 patent/DE2115764A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2115764A1 (en) | 1971-11-25 |
FR2092177A5 (en) | 1971-01-21 |
BE765051A (en) | 1971-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |