Patent US3304108A successfully refreshed from Google Patents.
US3304108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube construction
Assignee: WGG & COMPANY Inc 2525 STATE ST COLUMBUS IN 47201 A IN CORP
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Filing: 1963-12-18
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Granted: 1967-02-14
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Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Earl F Hamilton
- 👤 Ralph B Lay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:47
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/02; F16L41/025; F16L43/00; F16L43/001; F16L43/003; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |