US3092222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cruciform structural steel columns
Assignee: Individual
•
Filing: 1958-02-26
•
Granted: 1963-06-04
•
Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Albert W Heinle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04C3/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US157908A
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US435429A
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US484026A
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US567202A
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US1100742A
Cited
US1079739A
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US1892608A
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US1977715A
Cited
US2375116A
Cited
US2420715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |