US2386259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing treatment of materials
Assignee: General Electric Co
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Filing: 1942-07-30
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Granted: 1945-10-09
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Expires: 1962-07-30
Abstract
No abstract record available.
Inventors
- 👤 Francis J Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; D; D06; D06M; D06M13/00; D06M13/50; D06M13/51; D06M13/513; D06M13/517; Y; Y10; Y10S; Y10S106/00; Y10S106/04; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/223
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) | 1948-10-08 | 1949-04-09 | 1949-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-08 | 1953-04-09 | 1953-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-08 | 1957-04-09 | 1957-10-09 | $7700.00 | Window Closed / Lapsed |