Patent US2561270A successfully refreshed from Google Patents.
US2561270A
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US
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Liquefied petroleum gas lighter
Assignee: Individual
•
Filing: 1950-05-13
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Granted: 1951-07-17
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Expires: 1970-05-13
Abstract
No abstract record available.
Inventors
- 👤 Paul W Felt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/34; F23Q2/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191210826A
Cited
US1508600A
Cited
US1943505A
Cited
US2001394A
Cited
US2153432A
Cited
US2351376A
Cited
US2482794A
Cited
FR923219A
Cited
US2507839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |