Patent US2827784A successfully refreshed from Google Patents.
US2827784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace wall construction
Assignee: Individual
•
Filing: 1953-06-12
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Granted: 1958-03-25
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Expires: 1973-06-12
Abstract
No abstract record available.
Inventors
- 👤 Aime G Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:50
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/004; F23; F23M; F23M7/00; F27D1/0023
Claims Analysis
Total Claims: 0
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |