Patent US1279682A successfully refreshed from Google Patents.
US1279682A
Expired / Lapsed
US
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Heating device for metal-melting crucibles.
Assignee: FORT-IFIED MANUFACTURING Co
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Filing: 1917-07-18
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Granted: 1918-09-24
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Expires: 1937-07-18
Abstract
No abstract record available.
Inventors
- 👤 George L Fort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:23
CPC Classifications
B; B41; B41B; B41B11/00; B41B11/52; B41B11/74; B41B11/76; B41B11/82
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) | 1921-09-23 | 1922-03-25 | 1922-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-09-23 | 1926-03-25 | 1926-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-09-23 | 1930-03-25 | 1930-09-24 | $7700.00 | Window Closed / Lapsed |