Patent US2547795A successfully refreshed from Google Patents.
US2547795A
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Electric annealing furnace
Assignee: STORDY ENGINEERING Ltd
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Filing: 1949-11-04
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Granted: 1951-04-03
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Expires: 1969-11-04
Abstract
No abstract record available.
Inventors
- 👤 John J Stordy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
C; C21; C21D; C21D9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1294756A
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US1525725A
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US1931927A
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US2115586A
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US2113522A
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US2130756A
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US2290551A
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US2296806A
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US2391970A
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US2441500A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |