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US3018855A
Expired / Lapsed
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Railway brake beam support chair structure
Assignee: American Seal Kap Corp of Delaware
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Filing: 1957-11-07
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Granted: 1962-01-30
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Expires: 1977-11-07
Abstract
No abstract record available.
Inventors
- 👤 Irvin J Spaeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:43
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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US1390968A
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US1991376A
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US2067610A
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US2880826A
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US2851130A
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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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |