Patent US2880826A successfully refreshed from Google Patents.
US2880826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake beam safety support
Assignee: Grip Nut Co
•
Filing: 1954-06-21
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Granted: 1959-04-07
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Kass
- 👤 Paul D Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/34; B61H13/36
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |