US966064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-air furnace.
Assignee: JOHN C CHISUM
•
Filing: 1909-10-02
•
Granted: 1910-08-02
•
Expires: 1929-10-02
Abstract
No abstract record available.
Inventors
- 👤 William A Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064
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) | 1913-08-01 | 1914-01-31 | 1914-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-08-01 | 1918-01-31 | 1918-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-08-01 | 1922-01-31 | 1922-08-02 | $7700.00 | Window Closed / Lapsed |