US2884591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High vacuum leak detector
Assignee: Individual
•
Filing: 1952-06-25
•
Granted: 1959-04-28
•
Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Verne D Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:11
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US274295A
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US968677A
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US1163989A
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US1377282A
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US1910755A
Cited
US1851360A
Cited
US2526038A
Cited
US2504772A
Cited
US2620453A
Cited
US2582647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |