Patent US3431082A successfully refreshed from Google Patents.
US3431082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube furnace provided with filling bodies
Assignee: Battelle Development Corp
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Filing: 1965-07-12
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Granted: 1969-03-04
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Jan Sellin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:41
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/18; B; B01; B01J; B01J15/00; B01J15/005; B01J19/00; B01J19/0053; B01J19/006; B01J19/30; B01J19/305; F28; F28D; F28D17/00; F28D17/005; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2219/00; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/0077; B01J2219/00774; B01J2219/30; B01J2219/302; B01J2219/30207; B01J2219/30223; B01J2219/304; B01J2219/30416; Y; Y10; Y10S; Y10S261/00; Y10S261/72; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7736
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |