US4786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass lens
Assignee: —
•
Filing: —
•
Granted: 1846-10-03
•
Expires: 1863-10-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:40
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1849-10-02 | 1850-04-03 | 1850-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1853-10-02 | 1854-04-03 | 1854-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1857-10-02 | 1858-04-03 | 1858-10-03 | $7700.00 | Window Closed / Lapsed |