US2117397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated car wall
Assignee: Standard Railway Equipment Manufacturing Co
•
Filing: 1937-06-12
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Granted: 1938-05-17
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Expires: 1957-06-12
Abstract
No abstract record available.
Inventors
- 👤 Charles D Bonsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:17
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0072; B61D27/0081; Y; Y02; Y02T; Y02T30/00; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49622
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) | 1941-05-16 | 1941-11-15 | 1942-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-16 | 1945-11-15 | 1946-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-16 | 1949-11-15 | 1950-05-17 | $7700.00 | Window Closed / Lapsed |