US3499812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method in the manufacture of an exchanger packing for two fluids
Assignee: Individual
•
Filing: 1966-06-30
•
Granted: 1970-03-10
•
Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Ola Glav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:14
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/52; C04B41/009; C04B41/50; C04B41/5076; C04B41/5089; C04B41/60; C04B41/61; C04B41/65; C04B41/68; C04B41/70; C04B41/71; F; F28; F28D; F28D17/00; F28D17/02; F28F; F28F13/00; F28F13/003; F28F25/00; F28F25/02; F28F25/08; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898345A
Cited
US2354351A
Cited
GB783071A
Cited
US2989418A
Cited
US3157566A
Cited
US3239459A
Cited
US3377225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |