US3246674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum flask and coupling
Assignee: Thermovac Industries Corp
•
Filing: 1963-06-12
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Granted: 1966-04-19
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Kapeker Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/565; F; F16; F16L; F16L55/00; F26; F26B; F26B5/00; F26B5/04; F26B5/06; Y; Y10; Y10S; Y10S285/00; Y10S285/918; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A VACUUM FLASK COMPRISING AN OPEN TOP HOLLOW BODY PORTION AND A COVER THEREFOR, THE BODY PORTION PROVIDED EXTERNALLY WITH AN ANNULAR GROOVE ADJACENT ITS OPENING AND A PERIPHERAL SHOULDER BELOW THE GROOVE, A RESILIENT RING DISPOSED WITHIN THE GROOVE AND EXTENDING THEREFROM BEYOND THE SHOULDER, THE COVER COMPRISING AN OPEN TOP HOLLOW NECK, A FLARED CENTRAL PORTION AND AN ENLARGED
Claim 2
Dependent Claim
61 words
A VACUUM FLASK COMPRISING AN OPEN TOP HOLLOW BODY PORTION AND A COVER THEREFOR, THE BODY PORTION PROVIDED EXTERNALLY WITH AN ANNULAR GROOVE ADJACENT ITS OPENING AND A PERIPHERAL SHOULDER BELOW THE GROOVE, A RESILIENT RING DISPOSED WITHIN THE GROOVE AND EXTENDING THEREFROM BEYOND THE SHOULDER, THE COVER COMPRISING AN OPEN TOP HOLLOW NECK, A FLARED CENTRAL PORTION AND AN ENLARGED
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |