US3427431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeping bag and heater therefor
Assignee: Individual
•
Filing: 1966-12-13
•
Granted: 1969-02-11
•
Expires: 1986-12-13
Abstract
No abstract record available.
Inventors
- 👤 Raphael Joseph Costanzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:14
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/014; H05B2203/017; H05B2203/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US750179A
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US1996522A
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US2456468A
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US2584302A
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US2697775A
Cited
GB765709A
Cited
US2845519A
Cited
US2889445A
Cited
US2993979A
Cited
US3084424A
Cited
US3334363A
Cited
US3293405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |