US2139882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor structure
Assignee: Woodall Industries Inc
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Filing: 1937-01-07
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Granted: 1938-12-13
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Expires: 1957-01-07
Abstract
No abstract record available.
Inventors
- 👤 George R Cunnington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:21
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; E04F; E04F15/00; E04F15/18; E04F15/20; E04B2001/8414; E04B2001/8457; E04B2001/8461; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/249986; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31678; Y10T428/31717
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) | 1941-12-12 | 1942-06-13 | 1942-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-12 | 1946-06-13 | 1946-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-12 | 1950-06-13 | 1950-12-13 | $7700.00 | Window Closed / Lapsed |