US3500624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisting and forming device for pneumatic and mechanical spinning
Assignee: Individual
•
Filing: 1968-04-25
•
Granted: 1970-03-17
•
Expires: 1988-04-25
Abstract
No abstract record available.
Inventors
- 👤 Lev Judelevich Polyakovsky
- 👤 Igor Vladimirovich Kornev
- 👤 Lidia Petrovna Kovaeva
- 👤 Stanislav Markovich Balandin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:30
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US137443A
Cited
US727255A
Cited
US2068652A
Cited
US2573081A
Cited
US2668087A
Cited
US2959908A
Cited
US3100375A
Cited
US3100960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |