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US3397420A
Expired / Lapsed
US
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Sewer snake
Assignee: Individual
•
Filing: 1966-06-21
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Granted: 1968-08-20
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Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Schneider Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:28
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/459; Y10T403/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US501731A
Cited
US1641312A
Cited
US1805014A
Cited
US2521172A
Cited
US2880435A
Cited
US3118159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |