US2932491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer unit
Assignee: Motors Liquidation Co
•
Filing: 1957-10-03
•
Granted: 1960-04-12
•
Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Lester M Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:29
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/06; B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024; F25B39/04; F28F; F28F3/00; F28F3/12; F28F3/14; F25B2339/00; F25B2339/04; F25B2339/043; F28F2255/00; F28F2255/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2042420A
Cited
US2469828A
Cited
US2548036A
Cited
US2585736A
Cited
US2759247A
Cited
US2688794A
Cited
US2703702A
Cited
GB737582A
Cited
US2856164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |