US2880654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consistency regulating system
Assignee: Riegel Paper Corp
•
Filing: 1955-11-01
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Granted: 1959-04-07
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Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Elbert A Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0335; Y10T137/2496; Y10T137/2499; Y10T137/2506
Claims Analysis
Total Claims: 0
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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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |