US3021019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the separation of concrete bodies
Assignee: INTERNAT YTONG STABALITE CO LT
•
Filing: 1958-03-05
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Granted: 1962-02-13
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Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 Johnny Fagrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:58
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/10; B28; B28B; B28B13/00; B28B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH75555A
Cited
US1570538A
Cited
US2028443A
Cited
US2744639A
Cited
US2865517A
Cited
US2881503A
Cited
US2829419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |