Patent US2618989A successfully refreshed from Google Patents.
US2618989A
Expired / Lapsed
US
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Method of manufacturing orificed members
Assignee: Individual
•
Filing: 1948-06-01
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Granted: 1952-11-25
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Expires: 1968-06-01
Abstract
No abstract record available.
Inventors
- 👤 John A Cupler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
B; B24; B24B; B24B1/00; B23; B23P; B23P15/00; B23P15/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49432; Y10T29/496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190017073A
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US1426965A
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US1654936A
Cited
US1891304A
Cited
NL42439C
Cited
US2115402A
Cited
US2353171A
Cited
US2425835A
Cited
US2570765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |