US1070693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for hot-blast furnaces.
Assignee: Individual
•
Filing: 1912-12-18
•
Granted: 1913-08-19
•
Expires: 1932-12-18
Abstract
No abstract record available.
Inventors
- 👤 Paul L Keiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:47
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/005; F16K49/007; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49314
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) | 1916-08-18 | 1917-02-17 | 1917-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-08-18 | 1921-02-17 | 1921-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-08-18 | 1925-02-17 | 1925-08-19 | $7700.00 | Window Closed / Lapsed |