Patent US2857234A successfully refreshed from Google Patents.
US2785016A
Expired / Lapsed
US
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Flexible nozzles
Assignee: Heckethorn Manufacturing and Supply Co
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Filing: 1955-09-26
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Granted: 1957-03-12
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Vollertzen Sven Herman
- 👤 William W Heckethorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |