US2820651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound swivel adapter
Assignee: Individual
•
Filing: 1953-09-28
•
Granted: 1958-01-21
•
Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 John W Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/087; F16L37/00; F16L37/28; F16L37/38; F16L37/40; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE346274C
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US135388A
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US671274A
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US1064105A
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US1138093A
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US1921629A
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AT126726B
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US2245658A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |