US3464870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum polishing process
Assignee: North American Aluminum Corp
•
Filing: 1965-06-25
•
Granted: 1969-09-02
•
Expires: 1985-06-25
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Formsma
- 👤 Louis G Gaspar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:04
CPC Classifications
C; C23; C23F; C23F3/00; C23F3/02; C22; C22C; C22C21/00; C22C21/06; C22C21/08; C23F1/00; C23F1/10; C23F1/14; C23F1/32; C23F1/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3356550A
Cited
US3300349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |