US669988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of vaporizing hydrocarbon oils.
Assignee: New Light Heat & Power Co
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Filing: 1900-11-05
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Granted: 1901-03-19
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Expires: 1920-11-05
Abstract
No abstract record available.
Inventors
- 👤 Albert Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
F; F23; F23C; F23C6/00; F23C6/04; F23C6/045
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) | 1904-03-18 | 1904-09-17 | 1905-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-03-18 | 1908-09-17 | 1909-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-03-18 | 1912-09-17 | 1913-03-19 | $7700.00 | Window Closed / Lapsed |