Patent US1616901A successfully refreshed from Google Patents.
US1616901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making multiply waterproof sheets
Assignee: Individual
•
Filing: 1922-08-16
•
Granted: 1927-02-08
•
Expires: 1942-08-16
Abstract
No abstract record available.
Inventors
- 👤 Kirschbraun Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:59
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32; D21H27/34; D21H19/00; D21H19/10; D21H19/14; D21H19/36; D21H23/00; D21H23/02; D21H23/22; D21H23/24; D21H23/52; D21H23/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-02-07 | 1930-08-09 | 1931-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-02-07 | 1934-08-09 | 1935-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-02-07 | 1938-08-09 | 1939-02-08 | $7700.00 | Window Closed / Lapsed |