US2565997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load bracing frame
Assignee: Pittsburgh Steel Co
•
Filing: 1949-08-09
•
Granted: 1951-08-28
•
Expires: 1969-08-09
Abstract
No abstract record available.
Inventors
- 👤 Harry D Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:48
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/006; B63; B63B; B63B25/00; B63B25/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US891897A
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US969002A
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US968256A
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US2056704A
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US2227807A
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US2411768A
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US2476362A
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US2462619A
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US2497683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |