Patent US3419508A successfully refreshed from Google Patents.
US3419508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose surfaces and method of treating
Assignee: General Electric Co
•
Filing: 1965-09-17
•
Granted: 1968-12-31
•
Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Maurice E Grenoble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/32; C; C08; C08L; C08L83/00; C08L83/04; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |