US2904098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: Individual
•
Filing: 1956-03-12
•
Granted: 1959-09-15
•
Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Richard P Maitzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
D; D06; D06C; D06C29/00; A; A41; A41H; A41H43/00; A41H43/04; B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/78; B29C65/7858; B29C65/7861; B29C65/7864; B29C65/7876; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/47; B29C66/472; B29C66/80; B29C66/82; B29C66/822; B29C66/8227; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; D06H; D06H1/00; D06H1/04; D06M; D06M23/00; D06M23/16; D06M23/18; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |