BE726222A - - Google Patents
Info
- Publication number
- BE726222A BE726222A BE726222DA BE726222A BE 726222 A BE726222 A BE 726222A BE 726222D A BE726222D A BE 726222DA BE 726222 A BE726222 A BE 726222A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/032—Spiral stairways supported by a central column
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE726222 | 1968-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE726222A true BE726222A (it) | 1969-05-29 |
Family
ID=3854036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE726222D BE726222A (it) | 1968-12-30 | 1968-12-30 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE726222A (it) |
| CH (1) | CH510798A (it) |
| FR (1) | FR2027321A1 (it) |
| GB (1) | GB1293410A (it) |
| LU (1) | LU60030A1 (it) |
-
1968
- 1968-12-30 BE BE726222D patent/BE726222A/xx not_active IP Right Cessation
-
1969
- 1969-12-15 CH CH1860569A patent/CH510798A/fr not_active IP Right Cessation
- 1969-12-16 LU LU60030D patent/LU60030A1/xx unknown
- 1969-12-23 FR FR6944561A patent/FR2027321A1/fr not_active Withdrawn
- 1969-12-29 GB GB6310869A patent/GB1293410A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH510798A (fr) | 1971-07-31 |
| GB1293410A (en) | 1972-10-18 |
| LU60030A1 (it) | 1970-02-16 |
| FR2027321A1 (it) | 1970-09-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: WILLEMSENS ALBERT-HENDRIK Effective date: 19881230 |