Patent US2197115A successfully refreshed from Google Patents.
US2197115A
Expired / Lapsed
US
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Electric thermogauge engine unit
Assignee: Motors Liquidation Co
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Filing: 1937-01-27
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Granted: 1940-04-16
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Expires: 1957-01-27
Abstract
No abstract record available.
Inventors
- 👤 Donald W Randolph
- 👤 Robert H Bigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:33
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/07; H10D48/071; H10P; H10P14/00; H10P14/20; H10P14/203; H10P14/34; H10P14/3402; H10P14/3434
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |