US2720087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile air conditioning apparatus
Assignee: Individual
•
Filing: 1953-08-18
•
Granted: 1955-10-11
•
Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Willard L Groene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:45
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3205; B60H1/3208; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18152; Y10T74/1816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1900586A
Cited
US2173661A
Cited
US2320432A
Cited
US2264821A
Cited
US2346017A
Cited
US2677251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |