Patent US2743512A successfully refreshed from Google Patents.
US2743512A
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Apparatus for finning pipe
Assignee: NAT U S RADIATOR CORP
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Filing: 1951-08-22
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Granted: 1956-05-01
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Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Robert F Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:51
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/53; Y10T29/53113; Y10T29/53478; Y10T29/53987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1358167A
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US1948006A
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US2154855A
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US2247730A
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US2192106A
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US2345645A
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US2489377A
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US2522992A
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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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |