US2412470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of water-repellent materials
Assignee: General Electric Co
•
Filing: 1943-02-22
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Granted: 1946-12-10
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Expires: 1963-02-22
Abstract
No abstract record available.
Inventors
- 👤 Francis J Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:21
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C04B41/4933; C04B41/009; C04B41/80; C04B41/81; C04B41/82; C04B41/84; D; D06; D06M; D06M11/00; D06M11/77; D06M11/78; D06M13/00; D06M13/50; D06M13/51; D06M13/513; D06M13/517; D21; D21H; D21H17/00; D21H17/03; D21H17/04; D21H17/05; D21H17/13; D21H21/00; D21H21/14; D21H21/16
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) | 1949-12-09 | 1950-06-10 | 1950-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-09 | 1954-06-10 | 1954-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-09 | 1958-06-10 | 1958-12-10 | $7700.00 | Window Closed / Lapsed |