US2605531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for working clay
Assignee: INTERNAT CLAY MACHINERY CO
•
Filing: 1949-09-09
•
Granted: 1952-08-05
•
Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 Roy H Mcelroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/20; B28B3/22; Y; Y10; Y10S; Y10S425/00; Y10S425/06
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) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |