US2877781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for relieving waste stoppage in pipes by percussion
Assignee: Individual
•
Filing: 1955-05-10
•
Granted: 1959-03-17
•
Expires: 1975-05-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl C Lipp
- 👤 Allan L Kamerow
- 👤 Stanley H Kamerow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:35
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/30; B; B08; B08B; B08B2209/00; B08B2209/02; B08B2209/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1034301A
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US1275571A
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US1388854A
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US1940179A
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US1935123A
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US2056599A
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US2284640A
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US2259644A
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US2395354A
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US2459833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |