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Patent US3468314A successfully refreshed from Google Patents.
US3468314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cartridge
Assignee: Individual
•
Filing: 1967-10-05
•
Granted: 1969-09-23
•
Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:27
CPC Classifications
A; A24; A24D; A24D1/00; A24D1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB189624471A
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GB189705488A
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GB190022190A
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US1356736A
Cited
FR520316A
Cited
GB310638A
Cited
US2258933A
Cited
US2718892A
Cited
US2637327A
Cited
US2937648A
Cited
US2991788A
Cited
US3292639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |