US2550856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain car closure
Assignee: Individual
•
Filing: 1944-10-13
•
Granted: 1951-05-01
•
Expires: 1964-10-13
Abstract
No abstract record available.
Inventors
- 👤 Ouellet Francois Xavier
- 👤 Dorion Alexandre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:54
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; B61D19/002; Y; Y10; Y10S; Y10S292/00; Y10S292/32; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US197552A
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US309601A
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US596050A
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US678701A
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US695165A
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US720289A
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US875047A
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US942551A
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US991344A
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US1172320A
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US1566236A
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US1707064A
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US1721112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |