US2696978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace conveyer structure
Assignee: Individual
•
Filing: 1950-05-06
•
Granted: 1954-12-14
•
Expires: 1970-05-06
Abstract
No abstract record available.
Inventors
- 👤 David T Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:48
CPC Classifications
C; C23; C23D; C23D9/00; C23D9/06; C23D9/08; C23D9/10; F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2124010A
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US2071541A
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US2154844A
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US2379485A
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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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |