US3526547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning out drain traps
Assignee: ALBERT F SHOCK
•
Filing: 1968-08-21
•
Granted: 1970-09-01
•
Expires: 1988-08-21
Abstract
No abstract record available.
Inventors
- 👤 Albert F Shock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:25
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/284; E03C1/30; E03C1/304; E03C1/306; Y; Y10; Y10S; Y10S4/00; Y10S4/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2187043A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |