US1435992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for preventing unauthorized viewing of a surface
Assignee: Individual
•
Filing: 1921-07-09
•
Granted: 1922-11-21
•
Expires: 1941-07-09
Abstract
No abstract record available.
Inventors
- 👤 Walter C Strauss
- 👤 Edward E Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/0003; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7153; Y10T70/735; Y10T70/7407; Y10T70/7424; Y10T70/7435; Y10T70/7441; Y10T70/7915; Y10T70/80; Y10T70/8297
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-11-20 | 1926-05-22 | 1926-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-20 | 1930-05-22 | 1930-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-20 | 1934-05-22 | 1934-11-21 | $7700.00 | Window Closed / Lapsed |