US2462097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: PENN IND INSTR CORP
•
Filing: 1944-04-06
•
Granted: 1949-02-22
•
Expires: 1964-04-06
Abstract
No abstract record available.
Inventors
- 👤 Winfield B Heinz
- 👤 Arthur E Kittredge
- 👤 John G Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B71/00; F02B71/04; F02B71/06; F04; F04D; F04D27/00; F04D27/02; F04D27/0261; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310683A
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US1346563A
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US1346564A
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US1511489A
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US1508731A
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US1508707A
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US1557793A
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US2148230A
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US2216699A
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US2283175A
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US2374708A
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US2376143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |