US2799900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Car door
Assignee: Chicago Railway Equipment Co
•
Filing: 1954-03-15
•
Granted: 1957-07-23
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert I Gardner
- 👤 Paul Z Anderson
- 👤 Paul K Beemer
- 👤 Henry O Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:05
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US443956A
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US565286A
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US1193204A
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US1193601A
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US1071730A
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US1103607A
Cited
US1574553A
Cited
US1742864A
Cited
US1732555A
Cited
FR712155A
Cited
US2302484A
Cited
US2559447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |