US944436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating electric-furnace products.
Assignee: Individual
•
Filing: 1909-04-23
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Granted: 1909-12-28
•
Expires: 1929-04-23
Abstract
No abstract record available.
Inventors
- 👤 Aldus C Higgins
- 👤 George N Jeppson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:53
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/30; B; B01; B01J; B01J2219/00; B01J2219/00049; B01J2219/00164
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) | 1912-12-27 | 1913-06-28 | 1913-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-12-27 | 1917-06-28 | 1917-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-12-27 | 1921-06-28 | 1921-12-28 | $7700.00 | Window Closed / Lapsed |