Patent US2942557A successfully refreshed from Google Patents.
US2942557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable skid for high speed track carriages
Assignee: Individual
•
Filing: 1955-08-30
•
Granted: 1960-06-28
•
Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Hirsch Joseph
- 👤 Phillip H Mccary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:44
CPC Classifications
B; B61; B61H; B61H7/00; B61H7/02; B61B; B61B13/00; B61B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |