US2970677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic partitioning devices
Assignee: General Fireproofing Co
•
Filing: 1955-12-09
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Granted: 1961-02-07
•
Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Otis A Springs
- 👤 Lynne R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7433; E04B2/7435; E04B2/7437
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511996A
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US1043298A
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US1505380A
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US1919666A
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FR775877A
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FR46857E
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US2116534A
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US2352702A
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US2323674A
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |