US2593766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing materials
Assignee: CJ Patterson Co
•
Filing: 1948-09-29
•
Granted: 1952-04-22
•
Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles N Kimball
- 👤 William R Lewis
- 👤 Herman A Strecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:03
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1610563A
Cited
US2063840A
Cited
US2082364A
Cited
US2266114A
Cited
US2251641A
Cited
US2422742A
Cited
US2450459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |