US2431385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous body expansion joint
Assignee: Individual
•
Filing: 1945-03-01
•
Granted: 1947-11-25
•
Expires: 1965-03-01
Abstract
No abstract record available.
Inventors
- 👤 Albert C Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:34
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)
US1769630A
Cited
US1770167A
Cited
US1881437A
Cited
US1728114A
Cited
US1770357A
Cited
US2111114A
Cited
US2339556A
Cited
US2370647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |