US2649625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tornado proof building
Assignee: Individual
•
Filing: 1948-08-18
•
Granted: 1953-08-25
•
Expires: 1968-08-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:25
CPC Classifications
E; E04; E04H; E04H9/00; E04H9/14; E04B; E04B1/00; E04B1/35; E04B2001/3583; Y; Y02; Y02A; Y02A50/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1529516A
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US1717546A
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US1884462A
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US1900812A
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US2104871A
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US2105854A
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US2166577A
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US2142692A
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US2335317A
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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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |