US2674452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual operator for projected window sash
Assignee: Standard Thomson Corp
•
Filing: 1950-07-29
•
Granted: 1954-04-06
•
Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hummert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:38
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5009; E06B3/5018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1503393A
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US1661198A
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GB353966A
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US2022036A
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US1956476A
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US2103864A
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US2050403A
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US2088098A
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US2185321A
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US2315542A
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US2505912A
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US2528572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |