US3050808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making shell brick
Assignee: Kaiser Steel Corp
•
Filing: 1959-10-20
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Granted: 1962-08-28
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Expires: 1979-10-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Clanton
- 👤 Albert R Clanton
- 👤 Hollis L Clanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/028
Claims Analysis
Total Claims: 0
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |