US1471541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic wick adjustment for liquid-fuel burners
Assignee: CLEVELAND METAL PRODUCTS Co
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Filing: 1921-02-26
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Granted: 1923-10-23
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Expires: 1941-02-26
Abstract
No abstract record available.
Inventors
- 👤 Lee S Chadwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:22
CPC Classifications
F; F23; F23D; F23D3/00; F23D2900/00; F23D2900/31014
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) | 1926-10-22 | 1927-04-23 | 1927-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-22 | 1931-04-23 | 1931-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-22 | 1935-04-23 | 1935-10-23 | $7700.00 | Window Closed / Lapsed |