Patent US2983994A successfully refreshed from Google Patents.
US2983994A
Expired / Lapsed
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Metal articles having hollow sections and method of making same
Assignee: Olin Corp
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Filing: 1955-08-01
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Granted: 1961-05-16
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Wallace C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/14; B23; B23K; B23K35/00; B23K35/22; B23K35/224; B23P; B23P15/00; B23P15/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369; Y10T29/49371; Y10T29/4981; Y10T29/4998; Y10T29/49988; Y10T29/49991; Y10T428/00; Y10T428/12; Y10T428/12292; Y10T428/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US29276A
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US377317A
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US377318A
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US1127041A
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CA472790A
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DE401476C
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US1938633A
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US2498275A
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US2690002A
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US2662273A
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US2772180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |