US2988131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic ply holder
Assignee: Cleveland Trust Co
•
Filing: 1956-04-23
•
Granted: 1961-06-13
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Frohlich Adolf
- 👤 Edward J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:54
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/28; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1978620A
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US2085863A
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US2083370A
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US2441791A
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US2517889A
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US2671495A
Cited
US2621740A
Cited
US2668572A
Cited
US2681296A
Cited
US2753001A
Cited
US2801439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |