US51799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in sashes and frames for windows
Assignee: —
•
Filing: —
•
Granted: 1866-01-02
•
Expires: 1883-01-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
E; E05; E05D; E05D13/00; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/218; Y; Y10; Y10T; Y10T292/00; Y10T292/306; Y10T292/308
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) | 1869-01-01 | 1869-07-03 | 1870-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1873-01-01 | 1873-07-03 | 1874-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1877-01-01 | 1877-07-03 | 1878-01-02 | $7700.00 | Window Closed / Lapsed |