Patent US442642A successfully refreshed from Google Patents.
US442642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut-lock
Assignee: —
•
Filing: —
•
Granted: 1890-12-16
•
Expires: 1907-12-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:20
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/02; F16B39/04; F16B39/06; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93; Y10S411/948; Y10S411/955; Y10S411/974; Y10S411/984
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1893-12-15 | 1894-06-16 | 1894-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-12-15 | 1898-06-16 | 1898-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-12-16 | 1902-06-17 | 1902-12-17 | $7700.00 | Window Closed / Lapsed |