US1269052A
Expired / Lapsed
US
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Electric-heater element.
Assignee: TORONTO POWER Co Ltd
•
Filing: 1917-07-05
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Granted: 1918-06-11
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Expires: 1937-07-05
Abstract
No abstract record available.
Inventors
- 👤 Farley Granger Clark
- 👤 Paul Ackerman
- 👤 Charles Ernest Cansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/186; F24H1/185; F24H9/00; F24H9/18; F24H9/1809; F24H9/1818; H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B2203/00; H05B2203/014; H05B2203/021
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) | 1921-06-10 | 1921-12-10 | 1922-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-06-10 | 1925-12-10 | 1926-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-06-10 | 1929-12-10 | 1930-06-11 | $7700.00 | Window Closed / Lapsed |