US1218679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating covering.
Assignee: Johns Manville Corp
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Filing: 1914-01-08
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Granted: 1917-03-13
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Expires: 1934-01-08
Abstract
No abstract record available.
Inventors
- 👤 Charles R Manville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:55
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B31; B31D; B31D5/00; B31D5/0039; B31D5/0073; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24562; Y10T428/24612; Y10T428/25; Y10T428/31504; Y10T428/31652
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) | 1920-03-12 | 1920-09-11 | 1921-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-12 | 1924-09-11 | 1925-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-12 | 1928-09-11 | 1929-03-13 | $7700.00 | Window Closed / Lapsed |