US1484690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material for and method of cleaning metal surfaces
Assignee: Individual
•
Filing: 1919-02-27
•
Granted: 1924-02-26
•
Expires: 1939-02-27
Abstract
No abstract record available.
Inventors
- 👤 Percy H Walker
- 👤 John H Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C23; C23G; C23G1/00; C23G1/14; C23G1/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-02-25 | 1927-08-27 | 1928-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-02-25 | 1931-08-27 | 1932-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-02-25 | 1935-08-27 | 1936-02-26 | $7700.00 | Window Closed / Lapsed |