US2816459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing mechanism
Assignee: Blaw Knox Co
•
Filing: 1952-12-15
•
Granted: 1957-12-17
•
Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Badlam Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
B; B21; B21H; B21H1/00; B21H1/02; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1429; Y10T74/1441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1352420A
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FR621205A
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US1933593A
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DE597772C
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US2062564A
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US2009847A
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US2135643A
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US2453120A
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US2647422A
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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) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |