US2138751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of elastic objects from polyvinyl alcohol
Assignee: Firms Techno Chemie Kessler & Co KG
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Filing: 1935-11-12
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Granted: 1938-11-29
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Expires: 1955-11-12
Abstract
No abstract record available.
Inventors
- 👤 Vohrer Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; D; D01; D01F; D01F6/00; D01F6/02; D01F6/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-11-28 | 1942-05-30 | 1942-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-28 | 1946-05-30 | 1946-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-28 | 1950-05-30 | 1950-11-29 | $7700.00 | Window Closed / Lapsed |