PL74214B1 - - Google Patents
Info
- Publication number
- PL74214B1 PL74214B1 PL15131371A PL15131371A PL74214B1 PL 74214 B1 PL74214 B1 PL 74214B1 PL 15131371 A PL15131371 A PL 15131371A PL 15131371 A PL15131371 A PL 15131371A PL 74214 B1 PL74214 B1 PL 74214B1
- Authority
- PL
- Poland
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPINGÂ
- B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
- B63B19/12—Hatches; Hatchways
- B63B19/14—Hatch covers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15131371A PL74214B1 (en) | 1971-10-30 | 1971-10-30 | |
| FR7238467A FR2159063A5 (en) | 1971-10-30 | 1972-10-30 | |
| GB4990972A GB1358133A (en) | 1971-10-30 | 1972-10-30 | Hatch cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15131371A PL74214B1 (en) | 1971-10-30 | 1971-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL74214B1 true PL74214B1 (en) | 1974-10-31 |
Family
ID=19956084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL15131371A PL74214B1 (en) | 1971-10-30 | 1971-10-30 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2159063A5 (en) |
| GB (1) | GB1358133A (en) |
| PL (1) | PL74214B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4317092A (en) * | 1980-06-30 | 1982-02-23 | Hewlett-Packard Company | Recursive low pass digital filter |
-
1971
- 1971-10-30 PL PL15131371A patent/PL74214B1/xx unknown
-
1972
- 1972-10-30 GB GB4990972A patent/GB1358133A/en not_active Expired
- 1972-10-30 FR FR7238467A patent/FR2159063A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1358133A (en) | 1974-06-26 |
| FR2159063A5 (en) | 1973-06-15 |