Patent US2822584A successfully refreshed from Google Patents.
US2822584A
Expired / Lapsed
US
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Suspended ceiling construction
Assignee: Individual
•
Filing: 1950-10-06
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Granted: 1958-02-11
•
Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Leon F Urbain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:56
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1612075A
Cited
US1889770A
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US1931713A
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US1913527A
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US1896769A
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US2017911A
Cited
US1984028A
Cited
GB493571A
Cited
US2242558A
Cited
US2340911A
Cited
US2499278A
Cited
US2586327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |