US2497520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doctor blade mechanism for use in rotary intaglio printing machines
Assignee: R Hoe and Co Inc
•
Filing: 1946-10-23
•
Granted: 1950-02-14
•
Expires: 1966-10-23
Abstract
No abstract record available.
Inventors
- 👤 Toft Norman Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
B; B41; B41F; B41F9/00; B41F9/06; B41F9/08; B41F9/10; B41F9/1027
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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |