US2983488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating by steam
Assignee: Individual
•
Filing: 1957-12-11
•
Granted: 1961-05-09
•
Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 John E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:29
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/14; A47J27/16; A47J27/17; D; D06; D06B; D06B23/00; D06B23/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US48839A
Cited
US627120A
Cited
US833271A
Cited
US1150439A
Cited
US2001344A
Cited
US2102106A
Cited
US2371807A
Cited
US2277944A
Cited
US2703224A
Cited
US2797899A
Cited
US2809714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |