US2939302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular knitting machines
Assignee: Hemphill Co
•
Filing: 1953-07-30
•
Granted: 1960-06-07
•
Expires: 1973-07-30
Abstract
No abstract record available.
Inventors
- 👤 Letzerich Hellmut
- 👤 Hoersen Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:28
CPC Classifications
D; D04; D04B; D04B9/00; D04B9/26; D04B9/28; D04B1/00; D04B1/22; D04B1/24; D04B1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1084194A
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US999853A
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US1452842A
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GB308421A
Cited
US2125197A
Cited
US2158189A
Cited
US2217022A
Cited
US2402098A
Cited
US2626513A
Cited
US2680961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |