US1614827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary lens for eyeglasses
Assignee: Individual
•
Filing: 1925-06-11
•
Granted: 1927-01-18
•
Expires: 1945-06-11
Abstract
No abstract record available.
Inventors
- 👤 John A Coats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
G; G02; G02C; G02C9/00; G02C9/02; G02C7/00; G02C7/02; G02C7/08; G02C7/086; G02C9/04
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) | 1930-01-17 | 1930-07-19 | 1931-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-17 | 1934-07-19 | 1935-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-17 | 1938-07-19 | 1939-01-18 | $7700.00 | Window Closed / Lapsed |