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US2716997A
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Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1949-11-28
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Granted: 1955-09-06
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Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert R Crookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:13
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16D; F16D25/00; F16D25/12; F16D25/14; F16D48/00; F16D48/02; F16D2048/0215; F16D2048/0221; F16D2300/00; F16D2300/22; F16K2200/00; F16K2200/20; F16K2200/202; F16K2200/40; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7841; Y10T137/7847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |