US3482861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling channel
Assignee: Individual
•
Filing: 1968-07-01
•
Granted: 1969-12-09
•
Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Henry M Keating
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:06
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/12; F16L23/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US394479A
Cited
US2242468A
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US2126499A
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US2330769A
Cited
US2358733A
Cited
US2491700A
Cited
US2531349A
Cited
GB967745A
Cited
US3242948A
Cited
US3403220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |