US3388447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making joined glass lined pipes
Assignee: Pfaudler Inc
•
Filing: 1966-11-25
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Granted: 1968-06-18
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Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Bange
- 👤 Herbert F Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:06
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L13/0254; F16L13/0263; B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; F16L58/00; F16L58/02; F16L58/04; F16L58/14; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0822; B29L; B29L2009/00; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |