US2693952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forge furnace control
Assignee: Surface Combustion Corp
•
Filing: 1949-06-11
•
Granted: 1954-11-09
•
Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 John D Nesbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
B; B21; B21J; B21J17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1304258A
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US1954991A
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US1572600A
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US2233474A
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US2237785A
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US2254047A
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US2254959A
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US2277595A
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US2529690A
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US2589811A
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US2563908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |