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US2533986A
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Apparatus and method for filling molds
Assignee: PRECAST BUILDING SECTIONS Inc
•
Filing: 1944-09-22
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Granted: 1950-12-12
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Expires: 1964-09-22
Abstract
No abstract record available.
Inventors
- 👤 Atterbury Grosvenor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:17
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US905017A
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US1256074A
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US1881106A
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US2111663A
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US2167123A
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US2136224A
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US2208028A
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US2216786A
Cited
US2322228A
Cited
US2408221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |