Patent US2800942A successfully refreshed from Google Patents.
US2800942A
Expired / Lapsed
US
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Apparatus for performing multiple metal working operations on pipe
Assignee: Parker DJ Co Inc
•
Filing: 1954-10-08
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Granted: 1957-07-30
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Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
- 👤 James R Parker
- 👤 Maurice G Brazzil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:42
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326516A
Cited
US1392844A
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US1623807A
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US1782994A
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US2004816A
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US2342817A
Cited
US2506657A
Cited
US2548444A
Cited
US2669139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |