Patent US2977181A successfully refreshed from Google Patents.
US2977181A
Expired / Lapsed
US
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Suction cleaning system for textile machinery
Assignee: Parks Cramer Co
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Filing: 1959-03-04
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Granted: 1961-03-28
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Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Reiterer Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:45
CPC Classifications
D; D01; D01H; D01H11/00; D01H11/005; D01H11/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1548178A
Cited
DE649489C
Cited
AT173110B
Cited
US2524797A
Cited
GB681113A
Cited
US2810336A
Cited
US2695039A
Cited
FR65058E
Cited
US2819579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |