Patent Application for 'Lock Out Circuit for Automatic Telephone Exchange'
| Keywords | Transistors Telephone Exchange Circuit Hall Remyry Son |
| Ministry/ Department/ Residency | PATENTS AND DISGNS KOLKATA |
| Branch | Kolkata |
| From Year / Date (YYYY-MM-DD) |
1961 |
| To Year / Date (YYYY-MM-DD) |
1961 |
| Source Organization | NA |
| Identifier | NAIBHF00004151 |
| File No./Reference No./Sheet No./Folio No. | 76769 |
| Location | BBSR-R1 |
| Part No. | NA |
| File Size | 27.6 MB |
| Pages | 15 |
| Collection | Public Records |
| Call Number | NA |
| Publisher | NA |
| Subject | NA |
| Creator | NA |
| Accession Number | NA |
| Series | NA |
| Year of Publication | NA |
| Language | English |
| Bundle Barcode | NAIBHB00000228 |
| Location Code | NA |
| File Barcode | NAIBHF00004151 |
| QC Certificate No. | QC_20240625BH |
| Bundle No. | 36 |
-
8 views
Other Similar Items
-
- 3 Views
- Patent Application: Improvements in or relating to...
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 3 Views
- Patent Application - Control Circuits with Diodes
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1951
-
- 4 Views
- Patent Application for Switching Circuit
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 4 Views
- Patent Application - Impulse Generators for Track ...
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 3 Views
- Patent Application for Improvements in or Relating...
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 8 Views
- Register circuit for automatic telephone exchanges
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 7 Views
- Link control circuit for automatic telephone excha...
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- 3 Views
- Patent Application: Automatic Telephone & Electric...
- Department: PATENTS AND DESIGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1963
-
- 4 Views
- Improvements in or Relating to Circuit Arrangement...
- Department: PATENTS AND DISGNS KOLKATA
- Branch: Kolkata
- Year / Date: 1961
-
- RDSO: Grant of permission under ER- 48A to take ou...
- Department: Ministry of Railway
- Branch: Establishment Gazetted
- Year / Date: 1971
