Patent US4577877A successfully refreshed from Google Patents.
Patent US670506A successfully refreshed from Google Patents.
US670506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch.
Assignee: DENT HARDWARE Co
•
Filing: 1900-11-28
•
Granted: 1901-03-26
•
Expires: 1920-11-28
Abstract
No abstract record available.
Inventors
- 👤 Henry H Dent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:03
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/08; E05B65/0835; E05B65/0841; E05C; E05C3/00; E05C3/02; E05C3/04; E05C3/041; E05C3/046; Y; Y10; Y10S; Y10S292/00; Y10S292/47; Y10S292/71; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1041
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) | 1904-03-25 | 1904-09-24 | 1905-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-03-25 | 1908-09-24 | 1909-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-03-25 | 1912-09-24 | 1913-03-26 | $7700.00 | Window Closed / Lapsed |