Patent US3438656A successfully refreshed from Google Patents.
US3438656A
Expired / Lapsed
US
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Pressure can valve clamp
Assignee: Robinair Manufacturing Corp
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Filing: 1967-05-19
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Granted: 1969-04-15
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Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Junior L Fritch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:26
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/10; F16L37/103; F16C; F16C13/00; F17; F17C; F17C13/00; F17C13/04; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/032; F17C2205/0323; F17C2205/0329; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/6123; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1424
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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |