US3431718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and machines for twisting together strands of material
Assignee: E Vornbaumen and Co
•
Filing: 1965-02-11
•
Granted: 1969-03-11
•
Expires: 1985-02-11
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Hofrichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:21
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/02; D07B3/022; D07B3/08; D07B3/10; D07B2207/00; D07B2207/20; D07B2207/207; D07B3/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US23491A
Cited
US381365A
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US776509A
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US1907551A
Cited
US2831310A
Cited
GB959896A
Cited
US3142952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |