US2539875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joint filler for existing concrete pavements
Assignee: Individual
•
Filing: 1943-12-11
•
Granted: 1951-01-30
•
Expires: 1963-12-11
Abstract
No abstract record available.
Inventors
- 👤 William J Van London
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:09
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US234376A
Cited
US1134306A
Cited
US1380341A
Cited
US1628886A
Cited
US1730067A
Cited
GB321495A
Cited
US2129325A
Cited
US2167550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |