Patent US5690513A successfully refreshed from Google Patents.
US1049488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating device.
Assignee: HUGHES ELECTRIC HEATING Co
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Filing: 1910-06-11
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Granted: 1913-01-07
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Expires: 1930-06-11
Abstract
No abstract record available.
Inventors
- 👤 George A Hughes
- 👤 Trevor M Caven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:43
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0266; F; F24; F24C; F24C15/00; F24C15/10; F24C15/102; F24C15/106
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) | 1916-01-07 | 1916-07-08 | 1917-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-01-07 | 1920-07-08 | 1921-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-01-07 | 1924-07-08 | 1925-01-07 | $7700.00 | Window Closed / Lapsed |