US3004559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pancake air tube and method of making same
Assignee: Individual
•
Filing: 1958-03-17
•
Granted: 1961-10-17
•
Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles P Warman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:26
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/042; F16D25/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2839440A
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |