US1225548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eye-shield spectacles.
Assignee: T A Willson & Co Inc
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Filing: 1915-01-15
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Granted: 1917-05-08
•
Expires: 1935-01-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick Willson
- 👤 Numa Bourquin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:18
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/025; G; G02; G02C; G02C1/00; G02C1/06; G02C1/08
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) | 1920-05-07 | 1920-11-06 | 1921-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-05-07 | 1924-11-06 | 1925-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-05-07 | 1928-11-06 | 1929-05-08 | $7700.00 | Window Closed / Lapsed |