US2435561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder rings and method of making same
Assignee: Plastic Binding Corp
•
Filing: 1942-12-16
•
Granted: 1948-02-03
•
Expires: 1962-12-16
Abstract
No abstract record available.
Inventors
- 👤 Spinner Isidore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:22
CPC Classifications
B; B29; B29C; B29C67/00; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US298502A
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US665989A
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US1560681A
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US1576184A
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US1839699A
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US2126733A
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US2227275A
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US2202097A
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US2304629A
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US2330762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |