US3501778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained sewerage system
Assignee: Kidde Inc
•
Filing: 1969-02-13
•
Granted: 1970-03-24
•
Expires: 1989-02-13
Abstract
No abstract record available.
Inventors
- 👤 Max E Minniear
- 👤 Robert C Helke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:03
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899096A
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FR533510A
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US2027083A
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GB530525A
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US2298293A
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US2365080A
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US2381400A
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US2508906A
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US2838261A
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US3067433A
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US3057588A
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FR1300510A
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US3147941A
Cited
US3172131A
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US3289214A
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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) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |