US2645506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe flange connection
Assignee: ExxonMobil Oil Corp
•
Filing: 1951-02-09
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Granted: 1953-07-14
•
Expires: 1971-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert P Sturgis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:32
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/1205; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44325; Y10T24/44496; Y10T24/44513; Y10T24/44521; Y10T292/00; Y10T292/20; Y10T292/225
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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |