Patent US667764A successfully refreshed from Google Patents.
US667764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch.
Assignee: Individual
•
Filing: 1900-07-28
•
Granted: 1901-02-12
•
Expires: 1920-07-28
Abstract
No abstract record available.
Inventors
- 👤 David Robertson Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/32; H01H3/46
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) | 1904-02-12 | 1904-08-13 | 1905-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-02-12 | 1908-08-13 | 1909-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-02-12 | 1912-08-13 | 1913-02-12 | $7700.00 | Window Closed / Lapsed |