Patent US1930485A successfully refreshed from Google Patents.
US1930485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaking mechanism
Assignee: METROPOLITAN DEVICE Corp
•
Filing: 1928-08-02
•
Granted: 1933-10-17
•
Expires: 1948-08-02
Abstract
No abstract record available.
Inventors
- 👤 Murray Joseph Bradley
- 👤 Jr Thomas E Murray
- 👤 John F Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:28
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/10; H01H9/106; H01H33/00; H01H33/02; H01H33/04; H01H33/06
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) | 1936-10-16 | 1937-04-17 | 1937-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-16 | 1941-04-17 | 1941-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-16 | 1945-04-17 | 1945-10-17 | $7700.00 | Window Closed / Lapsed |