Patent US2743873A successfully refreshed from Google Patents.
US2743873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail bond and apparatus for attaching same
Assignee: Erico International Corp
•
Filing: 1950-10-19
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Granted: 1956-05-01
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Expires: 1970-10-19
Abstract
No abstract record available.
Inventors
- 👤 Donald J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:39
CPC Classifications
B; B60; B60M; B60M5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US717840A
Cited
US1542598A
Cited
US1712426A
Cited
US1865717A
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US1852694A
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Cited
US1687378A
Cited
US1828020A
Cited
US2014278A
Cited
US1945404A
Cited
US1883755A
Cited
US2238926A
Cited
US2262755A
Cited
US2277014A
Cited
US2280005A
Cited
US2276823A
Cited
US2401048A
Cited
US2360758A
Cited
US2464210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |