US2100138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bristle for cleaning devices
Assignee: Individual
•
Filing: 1935-07-27
•
Granted: 1937-11-23
•
Expires: 1955-07-27
Abstract
No abstract record available.
Inventors
- 👤 Heldt Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:58
CPC Classifications
A; A46; A46D; A46D1/00
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) | 1940-11-22 | 1941-05-24 | 1941-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-22 | 1945-05-24 | 1945-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-22 | 1949-05-24 | 1949-11-23 | $7700.00 | Window Closed / Lapsed |