US1660745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic building material
Assignee: ADA WALLACE DELANEY
•
Filing: 1926-06-30
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Granted: 1928-02-28
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Expires: 1946-06-30
Abstract
No abstract record available.
Inventors
- 👤 Delaney John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8423; E04B2001/8433; E04B2001/8442; E04B2001/8457; E04B2001/8476; E04B2001/848; E04B2001/8485; Y; Y10; Y10S; Y10S264/00; Y10S264/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-02-27 | 1931-08-29 | 1932-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-27 | 1935-08-29 | 1936-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-27 | 1939-08-29 | 1940-02-28 | $7700.00 | Window Closed / Lapsed |