US2710306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of glass
Assignee: Individual
•
Filing: 1954-09-03
•
Granted: 1955-06-07
•
Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Penberthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:28
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A GLASS FURNACE COMPRISING IN COMBINATION; A TANK PROVIDING MELTING, FINING, AND WORKING ZONES, OUTLET MEANS IN SAID WORKING ZONE FOR WITHDRAWING GLASS, A PLURALITY OF JOULE EFFECT ELECTRODES IN SAID MELTING AND FINING ZONE, AND A GROUNDED ELECTRODE IN SAID TANK SPACED A SHORTER DISTANCE FROM ANY OF SAID ELECTRODES THAN SAID OUTLET MEANS IS SPACED FROM THE SAME ELECTRODE.
Claim 2
Dependent Claim
61 words
A GLASS FURNACE COMPRISING IN COMBINATION; A TANK PROVIDING MELTING, FINING, AND WORKING ZONES, OUTLET MEANS IN SAID WORKING ZONE FOR WITHDRAWING GLASS, A PLURALITY OF JOULE EFFECT ELECTRODES IN SAID MELTING AND FINING ZONE, AND A GROUNDED ELECTRODE IN SAID TANK SPACED A SHORTER DISTANCE FROM ANY OF SAID ELECTRODES THAN SAID OUTLET MEANS IS SPACED FROM THE SAME ELECTRODE.
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) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |