Patent US2688167A successfully refreshed from Google Patents.
US2688167A
Expired / Lapsed
US
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Construction of kneed bents
Assignee: Individual
•
Filing: 1948-12-06
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Granted: 1954-09-07
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Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Win E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:46
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/42; E04C3/40; F; F16; F16B; F16B2200/00; F16B2200/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2520333A
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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) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |