Patent US3074451A successfully refreshed from Google Patents.
US3074451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid level indicating means for collapsible bag
Assignee: American Hospital Supply Corp
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Filing: 1960-09-02
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Granted: 1963-01-22
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Expires: 1980-09-02
Abstract
No abstract record available.
Inventors
- 👤 William G Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/10; Y; Y10; Y10S; Y10S128/00; Y10S128/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A COLLAPSIBLE AIR-EVACUATED BAG FORMED OF FLEXIBLE TRANSPARENT PLASTIC MATERIAL AND EQUIPPED WITH INDICATING MEANS FOR INDICATING THE LEVEL OF THE CONTENTS THEREOF, SAID BAG HAVING A PAIR OF OPPOSING SIDE WALLS CAPABLE OF ASSUMING A SPACED-APART RELATION WHEN SAID BAG IS FILLED AND OF FLEXING INTO CONTIGUOUS RELATION WHEN THE CONTENTS OF THE BAG ARE WITHDRAWN, SAID INDICATING MEANS COMPRISING COMPLEMENTARY MARKINGS UPON THE RESPECTIVE SIDE WALLS OF SAID BAG, SAID SIDE WALLS BEING FLATTENED TOGETHER ALONG AT LEAST ONE EDGE OF SAID BAG FOR THE GUIDING OF SAID SIDE WALLS INTO REGISTER WITH EACH OTHER AS THE CONTENTS OF SAID BAG ARE WITHDRAWN AND FOR THEREBY BRINGING SAID COMPLEMENTARY MARKINGS INTO JUXTAPOSITION TO DEFINE DISTINCTIVE COMPOSITE MARKINGS VISIBLE THROUGH THE BAG''S TRANSPARENT WALLS.
Claim 2
Dependent Claim
126 words
IN A COLLAPSIBLE AIR-EVACUATED BAG FORMED OF FLEXIBLE TRANSPARENT PLASTIC MATERIAL AND EQUIPPED WITH INDICATING MEANS FOR INDICATING THE LEVEL OF THE CONTENTS THEREOF, SAID BAG HAVING A PAIR OF OPPOSING SIDE WALLS CAPABLE OF ASSUMING A SPACED-APART RELATION WHEN SAID BAG IS FILLED AND OF FLEXING INTO CONTIGUOUS RELATION WHEN THE CONTENTS OF THE BAG ARE WITHDRAWN, SAID INDICATING MEANS COMPRISING COMPLEMENTARY MARKINGS UPON THE RESPECTIVE SIDE WALLS OF SAID BAG, SAID SIDE WALLS BEING FLATTENED TOGETHER ALONG AT LEAST ONE EDGE OF SAID BAG FOR THE GUIDING OF SAID SIDE WALLS INTO REGISTER WITH EACH OTHER AS THE CONTENTS OF SAID BAG ARE WITHDRAWN AND FOR THEREBY BRINGING SAID COMPLEMENTARY MARKINGS INTO JUXTAPOSITION TO DEFINE DISTINCTIVE COMPOSITE MARKINGS VISIBLE THROUGH THE BAG''S TRANSPARENT WALLS.
References Cited (Backward Citations)
US2328569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |