US2530388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moistening roller for duplicating machines
Assignee: Ditto Inc
•
Filing: 1947-11-05
•
Granted: 1950-11-21
•
Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Harold R Gullixson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:16
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/04; B41N2207/00; B41N2207/02; B41N2207/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US90702A
Cited
US321075A
Cited
US1927439A
Cited
GB366642A
Cited
US1887507A
Cited
US2168775A
Cited
US2306044A
Cited
US2277049A
Cited
US2421824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |