US1072571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace-charging apparatus.
Assignee: POWER SPECIALTY Co
•
Filing: 1911-02-16
•
Granted: 1913-09-09
•
Expires: 1931-02-16
Abstract
No abstract record available.
Inventors
- 👤 Percy D Canham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:36
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/44; F23G5/442; F23G5/444; F27; F27D; F27D3/00; F27D2003/0034; F27D2003/0067
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1916-09-08 | 1917-03-10 | 1917-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-09-08 | 1921-03-10 | 1921-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-09-08 | 1925-03-10 | 1925-09-09 | $7700.00 | Window Closed / Lapsed |