Patent US3175590A successfully refreshed from Google Patents.
US3175590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable cavity nozzle for vacuum packing and lifting device
Assignee: John Mohr and Sons
•
Filing: 1960-04-22
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Granted: 1965-03-30
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Belknap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:08
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/04; B65B31/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
THE PROCESS OF VACUUM PACKAGING A HOLLOW NONCOLLAPSIBLE ARTICLE HAVING AN OPEN END IN A COLLAPSIBLE AIR-TIGHT BAG, COMPRISING THE STEPS OF: WITHDRAWING AIR FROM THE BAG AT ONE LOCATION IN SAID BAG AND WITHDRAWING AIR AT ANOTHER LOCATION IN SAID BAG DURING AND AFTER WITHDRAWAL OF AIR AT SAID FIRST LOCATION.
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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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |