US1212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Christopher h
Assignee: —
•
Filing: —
•
Granted: 1839-06-29
•
Expires: 1856-06-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:52
CPC Classifications
G; G02; G02C; G02C9/00; Y; Y10; Y10S; Y10S436/00; Y10S436/805; Y10S436/807
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) | 1842-06-28 | 1842-12-28 | 1843-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1846-06-28 | 1846-12-28 | 1847-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1850-06-28 | 1850-12-28 | 1851-06-29 | $7700.00 | Window Closed / Lapsed |