US2703680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle heating system
Assignee: Individual
•
Filing: 1949-09-30
•
Granted: 1955-03-08
•
Expires: 1969-09-30
Abstract
No abstract record available.
Inventors
- 👤 Friedrich K H Nallinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:30
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/02; B60H1/04; B60H1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409072A
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US1676021A
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US1878496A
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US2009823A
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US2105193A
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US2090013A
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US2213018A
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US2236476A
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US2264945A
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US2322054A
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US2332149A
Cited
US2454511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |