US2990013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper making machines
Assignee: BERTRAMS Ltd
•
Filing: 1955-06-22
•
Granted: 1961-06-27
•
Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Rance Herbert Frederick
- 👤 Baggallay Merrik Burrell
- 👤 Robinson William Freder Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:55
CPC Classifications
D; D21; D21F; D21F2/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1262698A
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US1163251A
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US1274041A
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US1581656A
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US1715398A
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US1701226A
Cited
US1969546A
Cited
US2142711A
Cited
US2369674A
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US2415351A
Cited
US2694346A
Cited
US2748671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |