Patent US2063784A successfully refreshed from Google Patents.
US2063784A
Expired / Lapsed
US
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Heat treating
Assignee: Electric Furnace Co
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Filing: 1935-07-11
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Granted: 1936-12-08
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Expires: 1955-07-11
Abstract
No abstract record available.
Inventors
- 👤 Theodore B Bechtel
- 👤 Samuel J Eberwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:52
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/63
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) | 1939-12-08 | 1940-06-08 | 1940-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-08 | 1944-06-08 | 1944-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-08 | 1948-06-08 | 1948-12-08 | $7700.00 | Window Closed / Lapsed |