US2646180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete block handling device
Assignee: NORTHWEST CONCRETE PRODUCTS CO
•
Filing: 1949-11-10
•
Granted: 1953-07-21
•
Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Leon H Schlough
- 👤 Wesley E Schlough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/54; B60P1/5438; B60P1/5442
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US408716A
Cited
US510495A
Cited
US712471A
Cited
US679840A
Cited
US1215959A
Cited
US1291746A
Cited
US2082017A
Cited
US2301555A
Cited
US2503590A
Cited
US2535961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |