US2829803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation and storage hopper
Assignee: PATON HOLDINGS Ltd
•
Filing: 1954-11-22
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Granted: 1958-04-08
•
Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Hamilton N K Paton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:59
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/58; B65D88/60; B65D88/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2105160A
Cited
US2109549A
Cited
US2145613A
Cited
US2564163A
Cited
US2412121A
Cited
FR1030210A
Cited
US2728494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |