Patent EP0425783A1 successfully refreshed from Google Patents.
US2915151A
Expired / Lapsed
US
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Partition structures
Assignee: GEN STEEL PRODUCTS CORP
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Filing: 1957-12-04
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Granted: 1959-12-01
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Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 Kekenak Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7433; E04B2/7437; E04B2/7435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352702A
Cited
US2621357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |