US3205933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-fueled pilot burner
Assignee: Robertshaw Controls Co
•
Filing: 1962-08-01
•
Granted: 1965-09-14
•
Expires: 1982-08-01
Abstract
No abstract record available.
Inventors
- 👤 Louis P Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:39
CPC Classifications
F; F23; F23Q; F23Q9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A DRAFT RESISTANT PILOT BURNER COMPRISING. A PAIR OF HEMISPHERICAL SHELLS JOINED TOGETHER AT THEIR PERIPHERIES TO FORM A SPHERICAL BURNER HEAD, A GROUP OF AT LEAST THREE PORTS IN THE WALL OF EACH HEMISPHERICAL SHELL SPACED EQUIDISTANT FROM THE HORIZONTAL CENTER LINE COMMON TO BOTH HEMISPHERICAL SHELLS,
Claim 2
Dependent Claim
48 words
A DRAFT RESISTANT PILOT BURNER COMPRISING. A PAIR OF HEMISPHERICAL SHELLS JOINED TOGETHER AT THEIR PERIPHERIES TO FORM A SPHERICAL BURNER HEAD, A GROUP OF AT LEAST THREE PORTS IN THE WALL OF EACH HEMISPHERICAL SHELL SPACED EQUIDISTANT FROM THE HORIZONTAL CENTER LINE COMMON TO BOTH HEMISPHERICAL SHELLS,
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |