US1904251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper manufacture
Assignee: Raffold Process Corp
•
Filing: 1931-04-29
•
Granted: 1933-04-18
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Expires: 1951-04-29
Abstract
No abstract record available.
Inventors
- 👤 Rafton Harold Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:50
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/66; D21H17/03; D21H17/05; D21H17/14; D21H17/67; D21H17/675; D21H23/00; D21H23/02; D21H23/04; D21H23/06; D21H23/14
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) | 1936-04-17 | 1936-10-17 | 1937-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-17 | 1940-10-17 | 1941-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-17 | 1944-10-17 | 1945-04-18 | $7700.00 | Window Closed / Lapsed |