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US2844501A
Expired / Lapsed
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Fire-retarding board
Assignee: SOREN CLAUSEN
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Filing: 1953-12-28
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Granted: 1958-07-22
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jens C Snitker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:56
CPC Classifications
A; A62; A62B; A62B3/00; B; B63; B63B; B63B3/00; B63B3/14; B63B3/68; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/12; E04C2/24; E04C2/26; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/18; Y10T428/24; Y10T428/24752; Y10T428/2476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |