US1580647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating ferrous metal to prevent corrosion
Assignee: Individual
•
Filing: 1921-02-25
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Granted: 1926-04-13
•
Expires: 1941-02-25
Abstract
No abstract record available.
Inventors
- 👤 George D Breck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:28
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/30; C23C10/32; Y; Y10; Y10S; Y10S76/00; Y10S76/04; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T29/49705; Y10T29/49709; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
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) | 1929-04-12 | 1929-10-12 | 1930-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-12 | 1933-10-12 | 1934-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-12 | 1937-10-12 | 1938-04-13 | $7700.00 | Window Closed / Lapsed |