US2470599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long draft apron
Assignee: Armstrong World Industries Inc
•
Filing: 1941-07-31
•
Granted: 1949-05-17
•
Expires: 1961-07-31
Abstract
No abstract record available.
Inventors
- 👤 Bruce R Billmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/54; B29C70/542; B29C69/00; B29C69/001; B29C69/002; B29D; B29D99/00; B29D99/0032; B29D99/0035; D; D01; D01H; D01H5/00; D01H5/18; D01H5/70; D01H5/86; B29C53/00; B29C53/56; B29C53/58; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29L; B29L2007/00; B29L2007/007; B29L2031/00; B29L2031/32; B29L2031/324; D01H2700/00; D01H2700/245
Claims Analysis
Total Claims: 0
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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) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |