Patent DE346417C successfully refreshed from Google Patents.
US3033145A
Expired / Lapsed
US
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Insert welding rings
Assignee: Grinnell Corp
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Filing: 1959-02-24
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Granted: 1962-05-08
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Helmut J Thielsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:38
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/0203; F; F16; F16L; F16L13/00; F16L13/02; F16L13/0218
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |