US2666913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Individual
•
Filing: 1950-04-28
•
Granted: 1954-01-19
•
Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Schaelchlin Walter
- 👤 Jr Amos J Winchester
- 👤 John C Ponstingl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1201861A
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US2419417A
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US2400260A
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US2395693A
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US2450516A
Cited
US2404401A
Cited
US2580453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |