US2903543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric heating
Assignee: Armstrong World Industries Inc
•
Filing: 1954-10-29
•
Granted: 1959-09-08
•
Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Rueggeberg Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:05
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C65/48; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/114; B29C66/1142; B29C66/40; B29C66/41; B29C66/43; B29C66/434; B29C66/4342; B29C66/43421; B29C66/50; B29C66/51; B29C66/52; B29C66/526; B29C66/5263; B29C66/52631; B29C66/5268; B29C66/70; B29C66/74; B29C66/742; B29K; B29K2105/00; B29K2105/0097; B29K2105/04; B29K2711/00; B29K2711/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954678A
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US2205582A
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CH260146A
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US2397615A
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GB574657A
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US2528810A
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US2472708A
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US2480299A
Cited
US2498027A
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US2542702A
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US2590562A
Cited
US2643325A
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US2631222A
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |