US2528012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: John Brown & Co Ltd
•
Filing: 1945-04-10
•
Granted: 1950-10-31
•
Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Mensforth Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:24
CPC Classifications
B; B65; B65G; B65G65/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0326; B65G2814/0328; B65G2814/0337
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245656A
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US1302046A
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US1494622A
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US1700294A
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US1581685A
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US1930016A
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US2365635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |