Patent US2221362A successfully refreshed from Google Patents.
US3220157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chamber for the evacuation and gas treatment of packages
Assignee: FR Hesser Maschinenfabrik AG
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Filing: 1962-06-22
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Granted: 1965-11-30
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Buchner Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:55
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
IN A MACHINE FOR EVACUATING AND GAS TREATING PACKAGES, A TREATING CHAMBER COMPRISING A CLOSABLE VESSEL IN WHICH A PACKAGE IS ADAPTED FOR BEING SUPPORTED, A SUCTION PIPE PROJECTING INTO SAID CHAMBER, A GAS FEED PIPE PROJECTING INTO SAID CHAMBER, SAID PACKAGE HAVING AN OPENING OF PARTICULAR SIZE AND SHAPE THROUGH WHICH AIR IS EXHAUSTED FROM THE PACKAGE WITH THE SUCTION PIPE OPERATIVE, A GASSING TUBE COUPLED TO THE GAS FEED PIPE LOCATED ADJACENT THE OPENING OF THE PACKAGE AND HAVING A PLURALITY OF ORIFICES IN AN ARRANGEMENT CONFORMING WITH THE SHAPE AND SIZE OF THE OPENING TO CAUSE GAS FROM THE GAS FEED PIPE TO BE UNI-
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |