US2994400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anechoic tank lining
Assignee: Individual
•
Filing: 1955-12-29
•
Granted: 1961-08-01
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Heller Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:09
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; B; B65; B65D; B65D90/00; B65D90/02; B65D90/04; B65D90/041; B65D90/044; G; G10; G10K; G10K11/00; G10K11/02; G10K11/16; G10K11/162; G10K11/165; E04B2001/8414; E04B2001/8419
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR855789A
Cited
DE809599C
Cited
US2356640A
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US2313379A
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US2502016A
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US2464006A
Cited
US2519162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |