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US2706496A
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Concentric pipe insulator and spacer
Assignee: Texaco Inc
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Filing: 1952-05-29
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Granted: 1955-04-19
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Expires: 1972-05-29
Abstract
No abstract record available.
Inventors
- 👤 Donald H Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:52
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/12; F16L3/00; F16L3/16; F16L3/18; F16L7/00; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44239
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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |