US2003018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat
Assignee: GEN PLATE CO
•
Filing: 1930-09-08
•
Granted: 1935-05-28
•
Expires: 1950-09-08
Abstract
No abstract record available.
Inventors
- 👤 John A Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:32
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/125
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) | 1938-05-27 | 1938-11-26 | 1939-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-27 | 1942-11-26 | 1943-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-27 | 1946-11-26 | 1947-05-28 | $7700.00 | Window Closed / Lapsed |