Patent US4030945A successfully refreshed from Google Patents.
Patent US1503605A successfully refreshed from Google Patents.
US1503605A
Expired / Lapsed
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Sound-deadening fiber board
Assignee: C F DAHLBERG
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Filing: 1920-04-29
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Granted: 1924-08-05
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Expires: 1940-04-29
Abstract
No abstract record available.
Inventors
- 👤 John K Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:19
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/742; E04B2001/743; E04B2001/745; E04B2001/8457; E04B2001/8461; Y; Y02; Y02A; Y02A30/00; Y02A30/24; Y02A30/244; Y10; Y10S; Y10S220/00; Y10S220/09; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249925; Y10T428/249928
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) | 1927-08-05 | 1928-02-04 | 1928-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-05 | 1932-02-04 | 1932-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-05 | 1936-02-04 | 1936-08-05 | $7700.00 | Window Closed / Lapsed |