US2834097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded connections and valves and method of making same
Assignee: GEORGE A BUTLER
•
Filing: 1952-11-24
•
Granted: 1958-05-13
•
Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Eichenberg Robert
- 👤 J C Shuptrine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:00
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/006; F; F16; F16K; F16K27/00; F16K27/10; F16K27/105; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49425; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US678014A
Cited
US1638546A
Cited
US1828478A
Cited
US1598244A
Cited
US2107575A
Cited
GB491703A
Cited
US2308307A
Cited
US2535320A
Cited
US2433638A
Cited
US2632624A
Cited
US2653789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |