US3389738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window shade apparatus
Assignee: Individual
•
Filing: 1967-02-23
•
Granted: 1968-06-25
•
Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Roth Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:33
CPC Classifications
A; A47; A47H; A47H23/00; A47H23/02; A47H23/08; A47H23/10; E; E06; E06B; E06B9/00; E06B9/24; E06B9/40; E06B9/42; E06B9/50; E06B9/02; E06B9/08; E06B9/11; E06B9/17; E06B9/174; E06B2009/1746
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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |