US1875644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making heat and sound insulating products
Assignee: Universal Gypsum & Lime Co
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Filing: 1930-08-18
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Granted: 1932-09-06
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Expires: 1950-08-18
Abstract
No abstract record available.
Inventors
- 👤 William K Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0029; B28B7/0035; B28B7/0041; B28B1/00; B28B1/52; B28B23/00; B28B23/0006; B28B5/00; B28B5/06; B28B5/08; B28B7/40; B28B7/46; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C; C04; C04B; C04B28/00; C04B28/14
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) | 1935-09-06 | 1936-03-07 | 1936-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-06 | 1940-03-07 | 1940-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-06 | 1944-03-07 | 1944-09-06 | $7700.00 | Window Closed / Lapsed |