US2769487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow torch
Assignee: Individual
•
Filing: 1953-01-05
•
Granted: 1956-11-06
•
Expires: 1973-01-05
Abstract
No abstract record available.
Inventors
- 👤 Fritz L Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612272A
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US654566A
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US872500A
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CH47709A
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US1288171A
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US1527269A
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FR977493A
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US2414455A
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US2539595A
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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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |