Patent US2984801A successfully refreshed from Google Patents.
US2984801A
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Assignee: Gulf Research and Development Co
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Filing: 1959-04-30
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Granted: 1961-05-16
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Expires: 1979-04-30
Abstract
No abstract record available.
Inventors
- 👤 Norman C Pflaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:48
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03H7/17; H03H7/1741; H03H7/175; H03H7/1775; G; G01; G01V; G01V1/00; G01V1/16; G01V1/162; G01V1/164; H03H2210/00; H03H2210/01; H03H2210/012; H03H2210/015; H03H2210/02; H03H2210/026; H03H2210/03; H03H2210/033
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |