US1644652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof covering and process of making same
Assignee: Individual
•
Filing: 1920-05-28
•
Granted: 1927-10-04
•
Expires: 1940-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kirschbraun Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:00
CPC Classifications
D; D06; D06N; D06N5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24397; Y10T428/24413; Y10T428/24421; Y10T428/2443; Y10T428/31504; Y10T428/31815; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2049; Y10T442/2057; Y10T442/2074; Y10T442/50; Y10T442/59
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) | 1930-10-03 | 1931-04-04 | 1931-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-03 | 1935-04-04 | 1935-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-03 | 1939-04-04 | 1939-10-04 | $7700.00 | Window Closed / Lapsed |