US2892252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft gear compressor
Assignee: Pullman-Standard Car Manufacturing Co
•
Filing: 1955-04-11
•
Granted: 1959-06-30
•
Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Pruckner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:25
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53613; Y10T29/53678; Y10T29/53683; Y10T29/53796
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303665A
Cited
US1371861A
Cited
US1445001A
Cited
US1869184A
Cited
US1853448A
Cited
US2241794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |