US2709835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flue liner and method of making same
Assignee: RAY MCCLEERY
•
Filing: 1953-01-19
•
Granted: 1955-06-07
•
Expires: 1973-01-19
Abstract
No abstract record available.
Inventors
- 👤 Frese Verue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B28/00; C04B28/24; C04B28/26; C04B41/45; C04B41/50; C04B41/5076; C04B41/5089; C04B41/60; C04B41/61; C04B41/65; C04B41/68; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A FLUE LINER COMPRISING A PURNICE AGGREGATE CONCRETE BLOCK COATED AND IMPREGNATED WITH A WATER SOLUTION COMPRISING CEMENT AS A MAJOR CONSTITUENT AND CALCIUM CHLORIDE AND SODIUM SILICATE AS MINOR CONSTITUENTS.
Claim 2
Dependent Claim
31 words
A FLUE LINER COMPRISING A PURNICE AGGREGATE CONCRETE BLOCK COATED AND IMPREGNATED WITH A WATER SOLUTION COMPRISING CEMENT AS A MAJOR CONSTITUENT AND CALCIUM CHLORIDE AND SODIUM SILICATE AS MINOR CONSTITUENTS.
References Cited (Backward Citations)
US1782460A
Cited
US1876357A
Cited
US2393597A
Cited
US2336723A
Cited
US2483498A
Cited
US2581579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |