US2915016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volume compensating means for pulsating pumps
Assignee: Individual
•
Filing: 1957-04-18
•
Granted: 1959-12-01
•
Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Weaver D L Wright
- 👤 Jr Robert S Maccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B43/0009; F04B43/0081; F04B43/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1301485A
Cited
FR673850A
Cited
US2452526A
Cited
US2578746A
Cited
FR1128565A
Cited
US2827853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |