US2459721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing gaskets
Assignee: Johns Manville Corp
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Filing: 1946-01-26
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Granted: 1949-01-18
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Expires: 1966-01-26
Abstract
No abstract record available.
Inventors
- 👤 Emil J Poltorak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; B; B29; B29D; B29D99/00; B29D99/0082; B29K; B29K2009/00; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/06; B29K2105/08; B29K2503/00; B29K2503/04; B29K2503/08; B29L; B29L2031/00; B29L2031/709; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103; Y10T156/1031; Y10T156/1036; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20888; Y10T74/20912; Y10T74/20918
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) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |