US2561746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1947-06-11
•
Granted: 1951-07-24
•
Expires: 1967-06-11
Abstract
No abstract record available.
Inventors
- 👤 Dennis W Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
B; B27; B27F; B27F1/00; B27F1/02; B27F1/06; B27B; B27B29/00; B27B29/08; Y; Y10; Y10T; Y10T82/00; Y10T82/27; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/647; Y10T83/6584; Y10T83/6608; Y10T83/6622; Y10T83/6625; Y10T83/6627
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US31831A
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US198327A
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US243745A
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US283874A
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US995833A
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US1456912A
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US2352885A
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US2441925A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |