US1007441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater and process of constructing the same.
Assignee: Westinghouse Electric Corp
•
Filing: 1909-03-15
•
Granted: 1911-10-31
•
Expires: 1929-03-15
Abstract
No abstract record available.
Inventors
- 👤 William S Hadaway Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:58
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/08; H01C1/084; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087
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) | 1914-10-30 | 1915-05-01 | 1915-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-10-30 | 1919-05-01 | 1919-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-10-30 | 1923-05-01 | 1923-10-31 | $7700.00 | Window Closed / Lapsed |