US3535161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clearing sewer lines and the like
Assignee: ROBERT J GUTRICH
•
Filing: 1969-01-27
•
Granted: 1970-10-20
•
Expires: 1989-01-27
Abstract
No abstract record available.
Inventors
- 👤 Robert J Gutrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
E; E03; E03F; E03F9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735794A
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US1587194A
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US1803425A
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US2117648A
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US2245554A
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US2232358A
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US3075535A
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US3215560A
Cited
US3321184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |