US2977107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating furnace
Assignee: Pacific Scientific Co
•
Filing: 1957-10-08
•
Granted: 1961-03-28
•
Expires: 1977-10-08
Abstract
No abstract record available.
Inventors
- 👤 Harold E Mescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/63; C21D1/74; C21D9/00; C21D9/0062; C23; C23C; C23C8/00; C23C8/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1755072A
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US1842972A
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US1895300A
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US1837178A
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US1951092A
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US2074185A
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US2341766A
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US2681971A
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US2647978A
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US2777684A
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US2776134A
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US2898101A
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |