Patent US2770846A successfully refreshed from Google Patents.
US2770846A
Expired / Lapsed
US
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Truss shoe
Assignee: Easybow Engineering & Res Co
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Filing: 1951-09-29
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Granted: 1956-11-20
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Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Findleton Ronald James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:07
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/42; E04B; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B2001/2644; E04B2001/2652; E04B2001/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |