Patent US2477181A successfully refreshed from Google Patents.
US2477181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for cleaning aluminum preparatory to spot welding
Assignee: Turco Products Inc
•
Filing: 1942-07-06
•
Granted: 1949-07-26
•
Expires: 1962-07-06
Abstract
No abstract record available.
Inventors
- 👤 Emmette R Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:56
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125; B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3611
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB174489A
Cited
GB472893A
Cited
US2197405A
Cited
US2256449A
Cited
US2257960A
Cited
US2316219A
Cited
US2227945A
Cited
US2337062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |