US2746580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural unit
Assignee: Individual
•
Filing: 1946-09-05
•
Granted: 1956-05-22
•
Expires: 1966-09-05
Abstract
No abstract record available.
Inventors
- 👤 Leonhardt W Benz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:05
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/09; E04C2003/0486; E04C2003/0495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US814689A
Cited
US1604150A
Cited
US1526463A
Cited
US1680976A
Cited
US1746201A
Cited
US1646974A
Cited
US1745577A
Cited
US2106084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |