US1435533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for eyeglasses and eyeshades
Assignee: Individual
•
Filing: 1921-05-03
•
Granted: 1922-11-14
•
Expires: 1941-05-03
Abstract
No abstract record available.
Inventors
- 👤 Louis C Knackstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:58
CPC Classifications
G; G02; G02C; G02C9/00; G02C9/02; G02C11/00; G02C11/08; G02C5/00; G02C5/12; G02C5/122; G02C5/124; G02C7/00; G02C7/16
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) | 1925-11-13 | 1926-05-15 | 1926-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-13 | 1930-05-15 | 1930-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-13 | 1934-05-15 | 1934-11-14 | $7700.00 | Window Closed / Lapsed |