US2729431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning and sound deadening ceiling installation
Assignee: GEORGE P LITTLE Co Inc
•
Filing: 1951-11-17
•
Granted: 1956-01-03
•
Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 George P Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; F24D3/165; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1539219A
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US2139641A
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US2172771A
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US2309695A
Cited
US2382340A
Cited
CH241602A
Cited
US2628078A
Cited
US2594228A
Cited
US2662745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |