US3037895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced pipe line felt
Assignee: Johns Manville Corp
•
Filing: 1957-08-09
•
Granted: 1962-06-05
•
Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
- 👤 Robert G Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:28
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/16; Y; Y10; Y10S; Y10S138/00; Y10S138/02; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/24777; Y10T428/249921; Y10T428/249924; Y10T428/249926; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A REINFORCED PIPE LINE FELT COMPRISING A PLURALITY OF ASBESTOS PAPERS LAMINATED TO FORM A PIPE LINE FELT HAVING LONGITUDINAL EDGES, A PLURALITY OF ROWS OF CONTINOUS GLASS STRANDS IN SAID FELT EXTENDING GENERALLY PARALLEL TO SAID LONGITUDINAL EDGES, A DISCOUNTINOUS GLASS STRAND IN SAID FELT ADJACENT AT LEAST ONE OF SAID LONGITUDINAL EDGES AND PARALLEL THERETO, SAID ROWS OF CONTINUOUS GLASS STRANDS AND SAID DISCONTINOUS GLASS STRAND BEING INBEDDED BETWEEN ADJACENT INNER PAPERS,
References Cited (Backward Citations)
US2202014A
Cited
US2731066A
Cited
US2633440A
Cited
US2739092A
Cited
US2753284A
Cited
US2897841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |