Patent US2770143A successfully refreshed from Google Patents.
US2770143A
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US
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Assignee: Individual
•
Filing: 1951-02-12
•
Granted: 1956-11-13
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Expires: 1971-02-12
Abstract
No abstract record available.
Inventors
- 👤 Wilfrid H Bendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:44
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB562910A
Cited
US67100A
Cited
US310104A
Cited
US452122A
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US593872A
Cited
US1202773A
Cited
US1437655A
Cited
GB200832A
Cited
GB308635A
Cited
US2062115A
Cited
US2005841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |