Patent US2430435A successfully refreshed from Google Patents.
US2430435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prewelding cleaning of aluminum
Assignee: Old Carco LLC
•
Filing: 1942-09-10
•
Granted: 1947-11-04
•
Expires: 1962-09-10
Abstract
No abstract record available.
Inventors
- 👤 Lyman B Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:48
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US590966A
Cited
US1554483A
Cited
US1890214A
Cited
US1954744A
Cited
US1954745A
Cited
US2070487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |