US1858830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing composition and method of preparing
Assignee: Barrett Co Inc
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Filing: 1927-07-26
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Granted: 1932-05-17
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Expires: 1947-07-26
Abstract
No abstract record available.
Inventors
- 👤 John C Kratoville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B24/00; C04B24/04; C04B24/08; C04B24/085; C04B41/45; C04B41/46; C04B41/60; C04B41/61; C04B41/62; C04B2103/00; C04B2103/0068; C04B2103/0093; C04B2111/00; C04B2111/20; C04B2111/27
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) | 1935-05-17 | 1935-11-16 | 1936-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-17 | 1939-11-16 | 1940-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-17 | 1943-11-16 | 1944-05-17 | $7700.00 | Window Closed / Lapsed |