Patent US2853771A successfully refreshed from Google Patents.
US2853771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe fitting stand
Assignee: Individual
•
Filing: 1954-12-20
•
Granted: 1958-09-30
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 George W Melville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:33
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US285590A
Cited
US402108A
Cited
US1393125A
Cited
US1648474A
Cited
US2323039A
Cited
US2396452A
Cited
GB609346A
Cited
US2700949A
Cited
US2724175A
Cited
US2774134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |