US1335899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: KAHLENBERG BROS CO
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Filing: 1920-01-12
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Granted: 1920-04-06
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Expires: 1940-01-12
Abstract
No abstract record available.
Inventors
- 👤 William R Kahlenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/04; B01D29/00; B01D29/44; B01D29/88; B01D29/92
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) | 1923-04-06 | 1923-10-06 | 1924-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-04-06 | 1927-10-06 | 1928-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-04-06 | 1931-10-06 | 1932-04-06 | $7700.00 | Window Closed / Lapsed |