US2093306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater
Assignee: Individual
•
Filing: 1929-10-09
•
Granted: 1937-09-14
•
Expires: 1949-10-09
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:32
CPC Classifications
F; F28; F28D; F28D21/00; F28D21/0001; F28D21/0003; F28D21/0005; F28D21/0008; B; B29; B29C; B29C53/00; B29C53/80; B29C53/8008; B29C53/8016
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) | 1940-09-13 | 1941-03-15 | 1941-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-13 | 1945-03-15 | 1945-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-13 | 1949-03-15 | 1949-09-14 | $7700.00 | Window Closed / Lapsed |