US1444209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore-roasting furnace
Assignee: Individual
•
Filing: 1921-01-18
•
Granted: 1923-02-06
•
Expires: 1941-01-18
Abstract
No abstract record available.
Inventors
- 👤 Robert D Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:08
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/24; F27B9/00; F27B9/14; F27B9/20; F27B9/24; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/145; Y10S165/146
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) | 1926-02-05 | 1926-08-07 | 1927-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-02-05 | 1930-08-07 | 1931-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-02-05 | 1934-08-07 | 1935-02-06 | $7700.00 | Window Closed / Lapsed |