US2689361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer mechanism
Assignee: Waterbury Farrel Foundry and Machine Co
•
Filing: 1950-04-18
•
Granted: 1954-09-21
•
Expires: 1970-04-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Schaeffer
- 👤 Herbert L Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:59
CPC Classifications
B; B21; B21J; B21J13/00; B21J13/08; B21J9/00; B21J9/10; B21J9/18; B21K; B21K27/00; B21K27/02; B21K27/04; B23; B23G; B23G1/00; B23G1/16; B23G1/20; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051; Y10T74/1987; Y10T74/19893; Y10T74/1994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2100028A
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US928172A
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US1755945A
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US2038541A
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US1982460A
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US2074680A
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US2128186A
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US2244350A
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US2272758A
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US2544218A
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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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |