US2467431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined screen and venetian blind unit for window frames
Assignee: Individual
•
Filing: 1947-02-27
•
Granted: 1949-04-19
•
Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Wilburn M Kellogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:46
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52; E06B9/24; E06B9/26; E06B9/264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |