US3060283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current collector arm
Assignee: HK Porter Co Inc
•
Filing: 1957-04-01
•
Granted: 1962-10-23
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Mageoch Harry Yale
- 👤 David E Childs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:36
CPC Classifications
B; B60; B60L; B60L5/00; B60L5/38
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |