US3476411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel coupling having means for preventing axial and rotational movement
Assignee: HEIL-QUAKER HOME SYSTEMS Inc A CORP OF
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Filing: 1968-05-29
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Granted: 1969-11-04
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Expires: 1988-05-29
Abstract
No abstract record available.
Inventors
- 👤 Richard M Herbert
- 👤 James C Hinds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:09
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/008; F16K; F16K13/00; F16K13/04; F16L29/00; F16L29/005; F16L37/08; F16L37/084; F16L37/091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1072208A
Cited
US1609968A
Cited
US2118672A
Cited
US2375728A
Cited
US2615362A
Cited
US3202442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |