Patent US3109911A successfully refreshed from Google Patents.
US3109911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum furnace for dental laboratories
Assignee: David Feinson Inc
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Filing: 1960-02-17
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Granted: 1963-11-05
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Expires: 1980-02-17
Abstract
No abstract record available.
Inventors
- 👤 Marvin J Kremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:10
CPC Classifications
F; F27; F27B; F27B17/00; F27B17/02; F27B17/025; A; A61; A61C; A61C13/00; A61C13/20; F27D; F27D11/00; F27D11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A LABORATORY FURNACE DEVICE COMPRISING A HOUSING A DOOR FOR CLOSING SAID HOUSING, A LATCH FOR HOLDING SAID DOOR CLOSED, RAILS IN THE BOTTOM PART OF SAID HOUSING WITH FLANGES UPSTANDING FROM SUPPORT SURFACES THEREOF AND EXTENDING FROM THE FRONT TO THE REAR WALL OF THE HOUSING, AN OVEN SLIDABLY SUPPORTED ON SAID RAILS BETWEEN SAID FLANGES SO AS TO BE MOVABLE BETWEEN A POSITION OUTSIDE THE HOUSING AND ONE INSIDE THE SAME, ELECTRICAL HEATING MEANS IN SAID OVEN, PLUG MEANS EXTENDING REARWARDLY FROM SAID OVEN, A SOURCE OF ELECTRICAL POTENTIAL LOCATED EXTERNALLY OF SAID HOUSING, ELECTRICAL CONNECTOR MEANS
Claim 2
Dependent Claim
99 words
A LABORATORY FURNACE DEVICE COMPRISING A HOUSING A DOOR FOR CLOSING SAID HOUSING, A LATCH FOR HOLDING SAID DOOR CLOSED, RAILS IN THE BOTTOM PART OF SAID HOUSING WITH FLANGES UPSTANDING FROM SUPPORT SURFACES THEREOF AND EXTENDING FROM THE FRONT TO THE REAR WALL OF THE HOUSING, AN OVEN SLIDABLY SUPPORTED ON SAID RAILS BETWEEN SAID FLANGES SO AS TO BE MOVABLE BETWEEN A POSITION OUTSIDE THE HOUSING AND ONE INSIDE THE SAME, ELECTRICAL HEATING MEANS IN SAID OVEN, PLUG MEANS EXTENDING REARWARDLY FROM SAID OVEN, A SOURCE OF ELECTRICAL POTENTIAL LOCATED EXTERNALLY OF SAID HOUSING, ELECTRICAL CONNECTOR MEANS
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |