US90746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved looking-glass attachment
Assignee: —
•
Filing: —
•
Granted: 1869-06-01
•
Expires: 1886-06-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:28
CPC Classifications
B; B60; B60R; B60R1/00; B60R1/02; B60R1/06; B60R1/078; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32091; Y10T403/32114; Y10T403/32131; Y10T403/32155; Y10T403/32254; Y10T403/32467; Y10T403/32475; Y10T403/32491
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) | 1872-05-31 | 1872-11-30 | 1873-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-05-31 | 1876-11-30 | 1877-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-05-31 | 1880-11-30 | 1881-06-01 | $7700.00 | Window Closed / Lapsed |