Patent US2036913A successfully refreshed from Google Patents.
US2036913A
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Sound absorbing article
Assignee: Johns Manville Corp
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Filing: 1932-08-06
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Granted: 1936-04-07
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Expires: 1952-08-06
Abstract
No abstract record available.
Inventors
- 👤 George B Brown
- 👤 Harry E Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/165; C; C04; C04B; C04B26/00; C04B26/02; C04B26/026; C04B2111/00; C04B2111/52; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10S264/00; Y10S264/63; Y10S425/00; Y10S425/101
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) | 1939-04-07 | 1939-10-07 | 1940-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-07 | 1943-10-07 | 1944-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-07 | 1947-10-07 | 1948-04-07 | $7700.00 | Window Closed / Lapsed |