US2490247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor tile composition
Assignee: Hercules Powder Co
•
Filing: 1948-06-18
•
Granted: 1949-12-06
•
Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Lyle O Amberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/06; C; C08; C08K; C08K3/00; C08K5/00; C08K5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2362934A
Cited
US2461349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |