US2454700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating inks
Assignee: Ditto Inc
•
Filing: 1946-04-15
•
Granted: 1948-11-23
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Melville J Holik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:27
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US188212A
Cited
US1198440A
Cited
US1393142A
Cited
GB279403A
Cited
US1843661A
Cited
US2238275A
Cited
US2357948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |