Patent US5662701A successfully refreshed from Google Patents.
US2807432A
Expired / Lapsed
US
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Means of fastening flexible tubing to a duct collar
Assignee: Pyle National Co
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Filing: 1955-12-08
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Granted: 1957-09-24
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Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 James E Parker
- 👤 Frank W Weinberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:28
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F16; F16L; F16L33/00; F16L33/30; F24F13/0218
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |