US3383750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for flanging of thermoplastic lined pipe
Assignee: Dow Chemical Co
•
Filing: 1965-04-26
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Granted: 1968-05-21
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Robert E Schroeder
- 👤 Walter H West
- 👤 William F Mick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/005; B29C43/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49446; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3047937A
Cited
US3020068A
Cited
US3142868A
Cited
US3192612A
Cited
US3253841A
Cited
US3298716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |