US1171832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating metals.
Assignee: Individual
•
Filing: 1913-02-26
•
Granted: 1916-02-15
•
Expires: 1933-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frederic L Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:56
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C21D1/10
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) | 1919-02-14 | 1919-08-16 | 1920-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-02-14 | 1923-08-16 | 1924-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-02-14 | 1927-08-16 | 1928-02-15 | $7700.00 | Window Closed / Lapsed |