US2598254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the manufacture of molded building units
Assignee: Jackson and Church Co
•
Filing: 1946-08-02
•
Granted: 1952-05-27
•
Expires: 1966-08-02
Abstract
No abstract record available.
Inventors
- 👤 Walter A Grueneberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:16
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/06; B28B5/08; B28B1/00; B28B1/08; B28B1/087; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7024; Y10T403/7047; Y10T403/7051; Y10T403/7052
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |