US2992457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining pipe and tubing
Assignee: WR Grace and Co
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Filing: 1960-03-28
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Granted: 1961-07-18
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Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 John W Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; B; B29; B29C; B29C65/00; B29C65/48; B29C65/50; B29C65/5042; B29C65/5057; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/116; B29C66/1162; B29C66/32; B29C66/322; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/52291; B29C66/52292; B29C66/52296; B29C66/52297; B29C66/524; B29C66/5241; B29C51/00; B29C65/4805; B29C65/481; B29C65/4815; B29C66/70; B29C66/71; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0053; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10S264/00; Y10S264/71; Y10S285/00; Y10S285/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |