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US2817304A
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Assignee: Pennsylvania Railroad Co
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Filing: 1955-08-24
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Granted: 1957-12-24
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Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Garfield H Newcomer
- 👤 Lewis M Showers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:12
CPC Classifications
B; B61; B61D; B61D3/00; B61D3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525186A
Cited
US1081853A
Cited
US1745057A
Cited
US1871453A
Cited
US2028366A
Cited
US2065649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |