Patent US2687193A successfully refreshed from Google Patents.
US2687193A
Expired / Lapsed
US
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Metal falsework carrier for reinforced brickwork and reinforced concrete structures
Assignee: JOHANN FRIEDRICH ZWICKY
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Filing: 1950-08-18
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Granted: 1954-08-24
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Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Hinze Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:32
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/48; E04G11/50; E04G11/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH55873A
Cited
US1233743A
Cited
US1112542A
Cited
US1163641A
Cited
US1670462A
Cited
US1830060A
Cited
US1836126A
Cited
US1964208A
Cited
US2167413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |