Patent US2429949A successfully refreshed from Google Patents.
US2429949A
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US
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Heat-resisting wall construction
Assignee: Quigley Co Inc
•
Filing: 1940-01-20
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Granted: 1947-10-28
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Expires: 1960-01-20
Abstract
No abstract record available.
Inventors
- 👤 Howard C Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:34
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/004; F23; F23M; F23M5/00
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) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |