US1663442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-fuel-burning heater
Assignee: ELECTROMATIC APPLIANCE CORP
•
Filing: 1924-11-26
•
Granted: 1928-03-20
•
Expires: 1944-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jr George K Culp
- 👤 Galen D Barker
- 👤 William J Sturgis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:36
CPC Classifications
F; F23; F23N; F23N5/00
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) | 1931-03-20 | 1931-09-19 | 1932-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-03-20 | 1935-09-19 | 1936-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-03-20 | 1939-09-19 | 1940-03-20 | $7700.00 | Window Closed / Lapsed |