US2554493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn tensioning device
Assignee: Specialties Development Corp
•
Filing: 1947-08-22
•
Granted: 1951-05-29
•
Expires: 1967-08-22
Abstract
No abstract record available.
Inventors
- 👤 Edward J Heizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:31
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/10; B65H59/20; B65H59/22; B65H59/24; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE287703C
Cited
US172500A
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US707684A
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US945880A
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US1518494A
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US1534264A
Cited
GB310516A
Cited
US2166770A
Cited
US2283912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |