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US3358342A
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Apparatus for forming concrete articles
Assignee: Monolith Portland Cement Co
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Filing: 1964-11-09
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Granted: 1967-12-19
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:28
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/22; B28B21/24; B28B21/26; B28B21/30; B28B21/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768451A
Cited
US1932150A
Cited
GB560138A
Cited
SU151954A1
Cited
US3206821A
Cited
US3263285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |