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Patent US2995081A successfully refreshed from Google Patents.
US2995081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blockout means for printing press
Assignee: Davidson Corp
•
Filing: 1959-03-23
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Granted: 1961-08-08
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Crissy
- 👤 Frank A Doane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:27
CPC Classifications
B; B41; B41L; B41L19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1217250A
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US1211706A
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US1471895A
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US1428795A
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US1824436A
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US2088398A
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US2387750A
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US2421823A
Cited
US2518878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |