Patent US3204085A successfully refreshed from Google Patents.
US3204085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Lockheed Martin Corp
•
Filing: 1962-08-15
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Granted: 1965-08-31
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Expires: 1982-08-15
Abstract
No abstract record available.
Inventors
- 👤 Sr John P Busby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:25
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0033; H05B3/0071; H05B3/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A HEATER COMPRISING: SPACED APART HOLLOW EXPLOSION PROOF SUPPORT MEMBERS; A PLURALITY OF QUARTZ TUBES CONNECTED IN SEALED RELATION TO SAID SUPPORT MEMBERS; AN INFRARED LAMP MOUNTED IN EACH OF SAID TUBES WITH THE ENDS OF SAID LAMP SPACED INWARDLY FROM THE ENDS OF SAID TUBE AT THE CONNECTION OF SAID TUBES TO SAID SUPPORT MEMBERS; ELECTRICAL LEADS CONNECTING SAID LAMPS IN ELECTRICAL CIRCUIT WITHIN SAID SUPPORT MEMBERS; AND AN EXPLOSION PROOF ELECTRICAL CONNECTED TO ONE OF SAID SUPPORT MEMBERS AND TO THE ELECTRICAL LEADS THEREIN.
Claim 2
Dependent Claim
86 words
A HEATER COMPRISING: SPACED APART HOLLOW EXPLOSION PROOF SUPPORT MEMBERS; A PLURALITY OF QUARTZ TUBES CONNECTED IN SEALED RELATION TO SAID SUPPORT MEMBERS; AN INFRARED LAMP MOUNTED IN EACH OF SAID TUBES WITH THE ENDS OF SAID LAMP SPACED INWARDLY FROM THE ENDS OF SAID TUBE AT THE CONNECTION OF SAID TUBES TO SAID SUPPORT MEMBERS; ELECTRICAL LEADS CONNECTING SAID LAMPS IN ELECTRICAL CIRCUIT WITHIN SAID SUPPORT MEMBERS; AND AN EXPLOSION PROOF ELECTRICAL CONNECTED TO ONE OF SAID SUPPORT MEMBERS AND TO THE ELECTRICAL LEADS THEREIN.
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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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |