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Patent US2968837A successfully refreshed from Google Patents.
US2968837A
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Super-high pressure apparatus
Assignee: ENGINEERING SUPERVISION Co
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Filing: 1959-04-06
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Granted: 1961-01-24
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Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Zeitlin Alexander
- 👤 Herman Harry
- 👤 Brayman Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:56
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/065; B01J3/067; B30; B30B; B30B11/00; B30B11/004; B30B11/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US689567A
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US935809A
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US945992A
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US1536035A
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US1750432A
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US1755723A
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US2410581A
Cited
US2894281A
Cited
US2918699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |