Patent US3468409A successfully refreshed from Google Patents.
US3468409A
Expired / Lapsed
US
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Puller
Assignee: Phillips Petroleum Co
•
Filing: 1967-10-23
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Granted: 1969-09-23
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Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:17
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/003; B29; B29C; B29C43/00; B29C43/22; B29C48/00; B29C48/25; B29C48/355; B65; B65G; B65G37/00; B65H; B65H51/00; B65H51/14; B29C48/03; B29C48/09; B65G2812/00; B65G2812/01; B65G2812/016; B65G2812/018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1743018A
Cited
US2561069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |