US2490867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bed board
Assignee: Individual
•
Filing: 1946-08-06
•
Granted: 1949-12-13
•
Expires: 1966-08-06
Abstract
No abstract record available.
Inventors
- 👤 Charles W Greenhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:23
CPC Classifications
A; A47; A47C; A47C21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1356593A
Cited
US920256A
Cited
GB191122592A
Cited
US1029370A
Cited
US1383734A
Cited
US1700535A
Cited
GB333389A
Cited
US2174771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |