US2444868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible pipe coupling with fluidsupported packing
Assignee: ALL FLEX CORP
•
Filing: 1942-01-09
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Granted: 1948-07-06
•
Expires: 1962-01-09
Abstract
No abstract record available.
Inventors
- 👤 Frank M Allen
- 👤 Clyde B Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0824; F16L27/0828; Y; Y10; Y10S; Y10S277/00; Y10S277/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US991501A
Cited
US1908844A
Cited
US1973323A
Cited
US2132723A
Cited
US2165052A
Cited
US2269431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |