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US2465628A
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Instrumentation assembly
Assignee: Shell Development Co
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Filing: 1944-05-10
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Granted: 1949-03-29
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Expires: 1964-05-10
Abstract
No abstract record available.
Inventors
- 👤 Lawson E Border
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0053; B01J2219/00; B01J2219/00049; B01J2219/00162; B01J2219/00164; B01J2219/00171; B01J2219/00191; B01J2219/00193; B01J2219/00195; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7886; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US621486A
Cited
US996588A
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US1261262A
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US1281974A
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US1930107A
Cited
US2130981A
Cited
US2331208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |