Patent US2928166A successfully refreshed from Google Patents.
US2928166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube welding
Assignee: Lummus Technology LLC
•
Filing: 1955-02-17
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Granted: 1960-03-15
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Expires: 1975-02-17
Abstract
No abstract record available.
Inventors
- 👤 George A Worn
- 👤 Edward J Vanderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:57
CPC Classifications
F; F22; F22G; F22G3/00; F22G3/009; Y; Y10; Y10S; Y10S220/00; Y10S220/29; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1010960A
Cited
US1857912A
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GB349924A
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US2158799A
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DE671564C
Cited
US2304976A
Cited
US2237716A
Cited
US2538098A
Cited
US2709295A
Cited
US2785459A
Cited
US2721379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |