Patent CH236896A successfully refreshed from Google Patents.
US1521605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder for dynamo-electric machines
Assignee: Diehl Manufacturing Co
•
Filing: 1923-12-12
•
Granted: 1925-01-06
•
Expires: 1943-12-12
Abstract
No abstract record available.
Inventors
- 👤 Diehl Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:33
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/41
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) | 1928-01-06 | 1928-07-07 | 1929-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-01-06 | 1932-07-07 | 1933-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-01-06 | 1936-07-07 | 1937-01-06 | $7700.00 | Window Closed / Lapsed |