US2575131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spool with removable head
Assignee: NAT PLASTIC PRODUCTS Co
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Filing: 1949-10-04
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Granted: 1951-11-13
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Expires: 1969-10-04
Abstract
No abstract record available.
Inventors
- 👤 Salkin Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:16
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/14; B65H75/18; B65H75/22; B65H75/2245; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/50; B65H2701/51; B65H2701/511; B65H2701/5114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |