Patent US3891980A successfully refreshed from Google Patents.
Patent US2728223A successfully refreshed from Google Patents.
US2728223A
Expired / Lapsed
US
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Web tension measuring apparatus
Assignee: Champion Paper and Fibre Co
•
Filing: 1952-05-24
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Granted: 1955-12-27
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Expires: 1972-05-24
Abstract
No abstract record available.
Inventors
- 👤 Bernard W Herrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:45
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/0009; G; G01; G01L; G01L5/00; G01L5/04; G01L5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2177051A
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US2295399A
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US2345732A
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US2343229A
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US2398958A
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US2605101A
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US2438696A
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US2552189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |