Patent US2445484A successfully refreshed from Google Patents.
US2445484A
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US
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Expansion joint and integral anchor
Assignee: Individual
•
Filing: 1946-01-10
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Granted: 1948-07-20
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Expires: 1966-01-10
Abstract
No abstract record available.
Inventors
- 👤 Kopperman Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:10
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/028
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) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |