US2874566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing wall structure of hollow articles
Assignee: SUMMIT Manufacturing Co
•
Filing: 1956-07-06
•
Granted: 1959-02-24
•
Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Edmond J Mastak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:30
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01N; G01N3/00; G01N3/08; G01N3/10; G01N3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1429949A
Cited
US1554637A
Cited
US1811138A
Cited
US2497193A
Cited
US2459535A
Cited
US2633739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |