US1789552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Day and night vizor
Assignee: Individual
•
Filing: 1928-04-12
•
Granted: 1931-01-20
•
Expires: 1948-04-12
Abstract
No abstract record available.
Inventors
- 👤 Nelson H Judd
- 👤 Siegrist George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:20
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/025
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) | 1934-01-19 | 1934-07-21 | 1935-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-19 | 1938-07-21 | 1939-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-19 | 1942-07-21 | 1943-01-20 | $7700.00 | Window Closed / Lapsed |