US2743554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blast etching electrical devices
Assignee: International Resistance Co
•
Filing: 1952-04-19
•
Granted: 1956-05-01
•
Expires: 1972-04-19
Abstract
No abstract record available.
Inventors
- 👤 Edgar G Dailey
- 👤 Warshaw Julius
- 👤 William B Pegram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/32; B24C3/322; H; H01; H01C; H01C17/00; H01C17/22; H01C17/24; H01C17/245; Y; Y10; Y10S; Y10S451/00; Y10S451/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2563476A
Cited
US931341A
Cited
US1723112A
Cited
US1635184A
Cited
US1573523A
Cited
US1712804A
Cited
GB390476A
Cited
US2003504A
Cited
US2044561A
Cited
US2034211A
Cited
US2212855A
Cited
US2389757A
Cited
US2290979A
Cited
US2367957A
Cited
US2448551A
Cited
US2420296A
Cited
US2495269A
Cited
GB622209A
Cited
US2451635A
Cited
US2483956A
Cited
US2537269A
Cited
US2666279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |