US3500513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isodynamic apparatus for molding ceramic pipe
Assignee: Amsted Industries Inc
•
Filing: 1967-05-04
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Granted: 1970-03-17
•
Expires: 1987-05-04
Abstract
No abstract record available.
Inventors
- 👤 John M Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:26
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/02; B28B3/024; B28B21/00; B28B21/02; B28B21/10; B28B21/18; B28B21/70; B28B21/74; B30; B30B; B30B1/00; B30B1/10; B30B1/16; Y; Y10; Y10S; Y10S425/00; Y10S425/019
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172243A
Cited
US2573141A
Cited
US2558823A
Cited
US2681494A
Cited
US2777185A
Cited
US3061873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |