US2564831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window shade mounting device
Assignee: Individual
•
Filing: 1947-05-22
•
Granted: 1951-08-21
•
Expires: 1967-05-22
Abstract
No abstract record available.
Inventors
- 👤 Charles S Butkus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:50
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/56; E06B9/64; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902; Y10T24/3904; Y10T24/3936; Y10T24/394
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US648680A
Cited
US972888A
Cited
US1249936A
Cited
US1659834A
Cited
US1806228A
Cited
US2243910A
Cited
US2401770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |