US2936406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems and apparatus
Assignee: Individual
•
Filing: 1956-09-24
•
Granted: 1960-05-10
•
Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert Du Val
- 👤 Ralph R Batcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2799837A
Cited
US1810732A
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US2010338A
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US2493858A
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US2496853A
Cited
US2560320A
Cited
US2579141A
Cited
US2723368A
Cited
US2724026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |