Patent US3538526A successfully refreshed from Google Patents.
US3538526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow line for the production of cemented footwear
Assignee: STATNI VYZKUMNY USTAV KOZEDELNY
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Filing: 1969-07-28
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Granted: 1970-11-10
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Expires: 1989-07-28
Abstract
No abstract record available.
Inventors
- 👤 Josef Horak
- 👤 Jiri Paulus
- 👤 Frantisek Volek
- 👤 Zdenek Figalla
- 👤 Josef Hanko
- 👤 Oldrich Hadac
- 👤 Alois Opravil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:51
CPC Classifications
A; A43; A43D; A43D111/00; A43D117/00
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |