Patent US2557002A successfully refreshed from Google Patents.
US2557002A
Expired / Lapsed
US
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Railing structure
Assignee: Lathrop Paulson Co
•
Filing: 1946-10-02
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Granted: 1951-06-12
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Expires: 1966-10-02
Abstract
No abstract record available.
Inventors
- 👤 Harry D Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F2011/1868; E04F2011/1882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US152535A
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US381289A
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US402817A
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US648749A
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US960340A
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US1070814A
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US1464305A
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US1840048A
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US1918607A
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US2150651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |