Patent US2818557A successfully refreshed from Google Patents.
Patent US2246499A successfully refreshed from Google Patents.
US2246499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Car construction
Assignee: Pullman-Standard Car Manufacturing Co
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Filing: 1934-11-14
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Granted: 1941-06-24
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Expires: 1954-11-14
Abstract
No abstract record available.
Inventors
- 👤 Martin P Blomberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/043; B61D3/00; B61D3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-06-23 | 1944-12-23 | 1945-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-23 | 1948-12-23 | 1949-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-23 | 1952-12-23 | 1953-06-24 | $7700.00 | Window Closed / Lapsed |