Patent US2602323A successfully refreshed from Google Patents.
US2602323A
Expired / Lapsed
US
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Floor structure
Assignee: Individual
•
Filing: 1949-05-02
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Granted: 1952-07-08
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Expires: 1969-05-02
Abstract
No abstract record available.
Inventors
- 👤 Johannes C Leemhuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:48
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/326; E04B5/328; E04B5/48; E04F; E04F15/00; E04F15/02; E04F15/024; E04F15/02405; E04F15/02417; E04F15/02423; E04F15/02429
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US318324A
Cited
US453510A
Cited
US1033413A
Cited
US1861436A
Cited
FR671568A
Cited
GB440961A
Cited
US2192567A
Cited
US2153789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |