Patent US2717807A successfully refreshed from Google Patents.
US2467069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arch and wall construction
Assignee: Individual
•
Filing: 1944-03-09
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Granted: 1949-04-12
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Expires: 1964-03-09
Abstract
No abstract record available.
Inventors
- 👤 Wright Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:46
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/12
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) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |