Patent US2340401A successfully refreshed from Google Patents.
US2340401A
Expired / Lapsed
US
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Tear testing apparatus for rubber stock
Assignee: Hoover Co
•
Filing: 1941-04-14
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Granted: 1944-02-01
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Expires: 1961-04-14
Abstract
No abstract record available.
Inventors
- 👤 Frank A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:28
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/58; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0262; G01N2203/0278; G01N2203/0282; G01N33/00; G01N33/44; G01N33/445; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-31 | 1947-08-02 | 1948-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-31 | 1951-08-02 | 1952-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-31 | 1955-08-02 | 1956-02-01 | $7700.00 | Window Closed / Lapsed |