US2317487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnation of fibrous materials
Assignee: Individual
•
Filing: 1941-02-24
•
Granted: 1943-04-27
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Expires: 1961-02-24
Abstract
No abstract record available.
Inventors
- 👤 Schuelke Annelotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:16
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1025; C09K3/1028; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/47; C04B41/472; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/123; C08G63/137; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/53; F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; C09K2200/00; C09K2200/02; C09K2200/0278; C09K2200/0286; C09K2200/04; C09K2200/0429; C09K2200/0447; C09K2200/0452
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) | 1946-04-26 | 1946-10-26 | 1947-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-26 | 1950-10-26 | 1951-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-26 | 1954-10-26 | 1955-04-27 | $7700.00 | Window Closed / Lapsed |