US1122892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating apparatus.
Assignee: Individual
•
Filing: 1910-03-16
•
Granted: 1914-12-29
•
Expires: 1930-03-16
Abstract
No abstract record available.
Inventors
- 👤 Dudley Farrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/105; H05B6/108
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) | 1917-12-28 | 1918-06-29 | 1918-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-12-28 | 1922-06-29 | 1922-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-12-28 | 1926-06-29 | 1926-12-29 | $7700.00 | Window Closed / Lapsed |