Patent US3527291A successfully refreshed from Google Patents.
US3527291A
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US
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Expansion accommodating means and method
Assignee: Aero Flow Dynamics Inc
•
Filing: 1968-05-16
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Granted: 1970-09-08
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Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robert J Neary
- 👤 Walter J Markowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:17
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F24; F24H; F24H9/00; F24H9/0052; F28F9/0236; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1882085A
Cited
DE667144C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |