US2871502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum wheel for extracting liquid from tow
Assignee: Akzona Inc
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Filing: 1954-03-10
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Granted: 1959-02-03
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Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 John K Whisnant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/50; D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/06
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) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |