US2933918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining furnaces
Assignee: A E Anderson Construction Corp
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Filing: 1958-06-18
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Granted: 1960-04-26
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Ellis L Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/04; C21B7/06; F; F27; F27D; F27D1/00; F27D1/16; F27D1/1621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |