Patent CA847306A successfully refreshed from Google Patents.
Patent US2492560A successfully refreshed from Google Patents.
US2492560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire tightener and twister for concrete forms
Assignee: Individual
•
Filing: 1948-01-19
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Granted: 1949-12-27
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Expires: 1968-01-19
Abstract
No abstract record available.
Inventors
- 👤 Edward J Dullaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:54
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/075; E04G17/0751; E04G17/0754
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US341251A
Cited
US1605772A
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US641882A
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US1351598A
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US1694922A
Cited
US2118034A
Cited
US2214267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |