US2559871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
House structure and heating system therefor
Assignee: Individual
•
Filing: 1949-08-24
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Granted: 1951-07-10
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Expires: 1969-08-24
Abstract
No abstract record available.
Inventors
- 👤 Frazer W Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:22
CPC Classifications
F; F24; F24D; F24D5/00; F24D5/06; F24D5/10; E; E04; E04B; E04B1/00; E04B1/0023; F24F; F24F12/00; F24F12/001; F24F3/00; F24F3/12; F24F3/14; F24F3/147; F24F7/00; F24F7/04; F24S; F24S20/00; F24S20/60; F24S20/66; F24V; F24V50/00; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02B30/00; Y02B30/56; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S165/00; Y10S165/904
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) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |