Patent US2138085A successfully refreshed from Google Patents.
US2138085A
Expired / Lapsed
US
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Portable composite floor
Assignee: WOOD MOSAIC CO Inc
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Filing: 1935-03-11
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Granted: 1938-11-29
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Expires: 1955-03-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Birtles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:43
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/04; E04F2201/00; E04F2201/05; E04F2201/0505; E04F2201/0517; E04F2201/0523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-11-28 | 1942-05-30 | 1942-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-28 | 1946-05-30 | 1946-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-28 | 1950-05-30 | 1950-11-29 | $7700.00 | Window Closed / Lapsed |