US2800312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable concrete batching plant
Assignee: Individual
•
Filing: 1954-09-10
•
Granted: 1957-07-23
•
Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Harold W Ruby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/0481; B28C7/0486; Y; Y10; Y10T; Y10T137/00; Y10T137/8376
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |