US2973549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal cutter and take-off device
Assignee: Phillips Petroleum Co
•
Filing: 1956-06-29
•
Granted: 1961-03-07
•
Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 James W Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:44
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/64; B29B7/34; B29B7/52; B29B7/56; B29B7/74; B29B7/7476; B29B7/7495; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2083; Y10T83/2092; Y10T83/2096; Y10T83/21; Y10T83/2113; Y10T83/647; Y10T83/6584; Y10T83/6604
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |