Patent US5250058A successfully refreshed from Google Patents.
US243405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-spring
Assignee: —
•
Filing: —
•
Granted: 1881-06-28
•
Expires: 1898-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; Y; Y10; Y10S; Y10S16/00; Y10S16/33
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) | 1884-06-27 | 1884-12-27 | 1885-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-06-27 | 1888-12-27 | 1889-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-06-27 | 1892-12-27 | 1893-06-28 | $7700.00 | Window Closed / Lapsed |