US3424335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating diaphragm
Assignee: Structural Fibers Inc
•
Filing: 1966-07-25
•
Granted: 1969-01-28
•
Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Wiltshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:18
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2461537A
Cited
US2847142A
Cited
US3049261A
Cited
US3343708A
Cited
US3159301A
Cited
US3253732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |