US2970513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for analysis of materials
Assignee: MSA Safety Inc
•
Filing: 1957-03-25
•
Granted: 1961-02-07
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 James L Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/37; B; B60; B60T; B60T17/00; B60T17/08; B60T17/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361235A
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US2386831A
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US2681415A
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US2674696A
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US2688090A
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US2844729A
Cited
US2802109A
Cited
US2824968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |