US652640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace.
Assignee: Individual
•
Filing: 1899-09-15
•
Granted: 1900-06-26
•
Expires: 1919-09-15
Abstract
No abstract record available.
Inventors
- 👤 Henry Noel Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0607
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) | 1903-06-26 | 1903-12-26 | 1904-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-06-26 | 1907-12-26 | 1908-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-06-26 | 1911-12-26 | 1912-06-26 | $7700.00 | Window Closed / Lapsed |