US2993240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling tile mounting construction
Assignee: AIRSON Co Inc
•
Filing: 1956-09-28
•
Granted: 1961-07-25
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Walter M Ericson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:54
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/02; E04B9/22; E04B9/24; E04B9/247; F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24F7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2632535A
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US2578600A
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GB676264A
Cited
US2648102A
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US2858584A
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US2767440A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |