US146140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in roofing-tiles
Assignee: —
•
Filing: —
•
Granted: 1874-01-06
•
Expires: 1891-01-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:57
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/29; E04D1/2907; E04D1/2956; E04D1/02; E04D1/04; E04D1/2914; E04D1/2916; E04D1/2918
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) | 1877-01-05 | 1877-07-07 | 1878-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-01-05 | 1881-07-07 | 1882-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-01-05 | 1885-07-07 | 1886-01-06 | $7700.00 | Window Closed / Lapsed |