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US2536304A
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US
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Spinning head
Assignee: Signal Oil and Gas Co
•
Filing: 1946-01-12
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Granted: 1951-01-02
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Expires: 1966-01-12
Abstract
No abstract record available.
Inventors
- 👤 Moon James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:14
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555379A
Cited
US1625540A
Cited
US1860062A
Cited
US1910890A
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US2322739A
Cited
US2317306A
Cited
US2393603A
Cited
US2351887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |