US2791786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer mechanism for progressive headers and the like
Assignee: Waterbury Farrel Foundry and Machine Co
•
Filing: 1953-06-29
•
Granted: 1957-05-14
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Hoyt
- 👤 Erwin B Byam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:21
CPC Classifications
B; B21; B21J; B21J13/00; B21J13/08; B21K; B21K27/00; B21K27/02; B21K27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US573560A
Cited
US2069511A
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US2074104A
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US2272592A
Cited
US2272758A
Cited
US2328699A
Cited
US2544218A
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US2687660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |