US761204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrical heating apparatus.
Assignee: Cutler Hammer Manufacturing Co
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Filing: 1902-11-20
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Granted: 1904-05-31
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Expires: 1922-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles E Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:43
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B2203/00; H05B2203/017
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) | 1907-05-31 | 1907-11-30 | 1908-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-05-31 | 1911-11-30 | 1912-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-05-31 | 1915-11-30 | 1916-05-31 | $7700.00 | Window Closed / Lapsed |