Patent US2618148A successfully refreshed from Google Patents.
US2618148A
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US
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Prefabricated reinforced beam
Assignee: GEORGE H ZERFAS
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Filing: 1949-03-29
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Granted: 1952-11-18
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Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Robert S Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:34
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US786820A
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US1197363A
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US1158197A
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US1243000A
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US1762112A
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US2101538A
Cited
US2075633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |