US2955307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cleaning machine
Assignee: Marco Products Co
•
Filing: 1958-09-26
•
Granted: 1960-10-11
•
Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert G Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:19
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647765A
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US869058A
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US950431A
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US1225222A
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US2075215A
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US2355733A
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US2562574A
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US2619665A
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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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |