Patent US2790531A successfully refreshed from Google Patents.
Patent US3425455A successfully refreshed from Google Patents.
US3425455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprayed internally insulated pipe
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-08-30
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Granted: 1969-02-04
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Richard Kilpert
- 👤 Edward J Winsor
- 👤 Richard H Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:03
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/147; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L59/141
Claims Analysis
Total Claims: 0
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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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |