Patent US2355733A successfully refreshed from Google Patents.
US2355733A
Expired / Lapsed
US
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Pipe cleaning device
Assignee: BUYS
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Filing: 1941-03-15
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Granted: 1944-08-15
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Expires: 1961-03-15
Abstract
No abstract record available.
Inventors
- 👤 Charles A Johnson
- 👤 Glenn E Buys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:02
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-08-15 | 1948-02-14 | 1948-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-15 | 1952-02-14 | 1952-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-15 | 1956-02-14 | 1956-08-15 | $7700.00 | Window Closed / Lapsed |