US2976757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for filling tubes
Assignee: EIDP Inc
•
Filing: 1959-01-12
•
Granted: 1961-03-28
•
Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 William E Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:00
CPC Classifications
F; F42; F42B; F42B33/00; F42B33/02; F42B33/025; F42B33/0257; B; B01; B01J; B01J2208/00; B01J2208/00743; B01J2208/00752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1410741A
Cited
US1626118A
Cited
US2121597A
Cited
US2762302A
Cited
US2775987A
Cited
US2882820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |