US2525345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for rupturing paper and the like for testing purposes
Assignee: BF Perkins and Son Inc
•
Filing: 1948-05-20
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Granted: 1950-10-10
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Expires: 1968-05-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Getchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:54
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/10; G01N3/12; G01N2203/00; G01N2203/0098
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |