US1217431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrically heating metal.
Assignee: DOLLAR SAVING AND TRUST Co
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Filing: 1915-07-01
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Granted: 1917-02-27
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Expires: 1935-07-01
Abstract
No abstract record available.
Inventors
- 👤 William E Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:21
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
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) | 1920-02-27 | 1920-08-28 | 1921-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-27 | 1924-08-28 | 1925-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-27 | 1928-08-28 | 1929-02-27 | $7700.00 | Window Closed / Lapsed |