Patent US956642A successfully refreshed from Google Patents.
Patent US2579781A successfully refreshed from Google Patents.
US3423618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical machinery brush holder
Assignee: Harnischfeger Corp
•
Filing: 1966-04-25
•
Granted: 1969-01-21
•
Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Schmid
- 👤 James J Parez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:57
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |