US1728672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visible card record
Assignee: Individual
•
Filing: 1925-11-17
•
Granted: 1929-09-17
•
Expires: 1945-11-17
Abstract
No abstract record available.
Inventors
- 👤 Albion N Doe
- 👤 Leland S Briggs
- 👤 John W Donaldson
- 👤 Bernard L Polkosnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:27
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/18
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) | 1932-09-16 | 1933-03-18 | 1933-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-16 | 1937-03-18 | 1937-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-16 | 1941-03-18 | 1941-09-17 | $7700.00 | Window Closed / Lapsed |