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US1249366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-burning grate.
Assignee: ARTHUR B LEWIS
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Filing: 1916-12-23
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Granted: 1917-12-11
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Expires: 1936-12-23
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:02
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/16
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) | 1920-12-10 | 1921-06-11 | 1921-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-10 | 1925-06-11 | 1925-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-10 | 1929-06-11 | 1929-12-11 | $7700.00 | Window Closed / Lapsed |