US8158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mahlon gregg
Assignee: —
•
Filing: —
•
Granted: 1851-06-17
•
Expires: 1868-06-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:30
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/06; B28B5/08; Y; Y10; Y10S; Y10S70/00; Y10S70/42; Y10T; Y10T292/00; Y10T292/62; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7605; Y10T70/7667; Y10T70/7689; Y10T70/7701
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) | 1854-06-16 | 1854-12-16 | 1855-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1858-06-16 | 1858-12-16 | 1859-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1862-06-16 | 1862-12-16 | 1863-06-17 | $7700.00 | Window Closed / Lapsed |